If I was in charge of the next Kingdom Hearts SAGA I'd would definitely be a "different" experience. Different meaning, I wouldn't know how others would react. NOTE: This is with little to no knowledge of the fate of certain concepts of the KH series of Kingdom Hearts 3.
Setup
This new game would take place at least 10 years after KH3. This would require some worlds to stay out of this title due to their story. But characters like Mickey, Donald & Goofy would still be relevant but more experienced. Worlds like Agrabah, Beast's Castle & Big Hero 6 wouldn't return because of the lack of lore in the timeline making it move 10 years in the future. But some worlds could due to their long time sequels.
Story (added on)
I do have one idea for the story. In the original saga was about the heart, spirit & friendship. This one could be about how emotions work, color.
If there is no color, there is no emotion
If there is no emotion, there is no will to fight
If there is no will to fight, then everyone will submit to our righteous power
Along with the Heartless; beings made out of the darkness of people's hearts. Many would wonder what remain's of the light & the mind. In this new era light can be just as evil as darkness is portrayed. In the form of creatures known as the Aware. They would come in just as many numbers as the Heartless and similar forms, but they are more intelligent like the Nobodies, but also rely on instinct like the Heartless. In other words they'd be a hybrid. But instead of feeding off hearts, they feed off of other people's despair & sadness. They're like demons who find glee in making others suffer but both find glee in it & feed off it as well.
Someone could want to absorb all color from the universe to serve the helpless to both the Heartless & the Aware as an endless feast of hearts & destruction.
Characters and their new roles
First I would make the game follow a completely new cast. As much as I love the original cast I feel like they should have less involvement with the new story due to how complicated the original Saga was. Let's say if the now 26 year old Sora met the new main character and mentioned Xehanort, new fans might feel alienated. This new Saga should be a way for old & new fans to get into the series which is also why it should follow a new cast like in each Final Fantasy game.
Returning worlds
-Land of Departure would most likely be the same and sense (most likely) in KH3 it would revert from Castle Oblivion that world woudn't return.
-Destiny Islands would return but only as a special unlock for beating the game. Here you can interact with Sora, Riku, Kairi and the Final Fantasy characters who lived there like Tidus. You could also face them as well with a bonus boss fight against the classic Dark Side.
-Twilight Town MIGHT return depending on how it's used in KH3
-Keyblade Graveyard as much as I love that world wouldn't return for it's new story
-The World that Never was would return as one of the final worlds. Due to inactivity for the past 10 years the world would basicly be a baren wasteland. The Organization's castle would be falling apart showing the passage of time.
-Cable Town or Radient Garden. I can't decided between the 2.
-Yen Sid's Tower would return to interact with Yen Sid but if Twilight Town returns than it would be accessable through that world
-End of the World & Datascape. There would be no reason for that to return.
-Disney's Castle/Disney Town & Timeless River. They woudl all return with being able to go from the town to the castle with ease along with the Hall of the Cornerstone. Timeless river would be updated to be larger and more explorative
-Wonderland would return with Tim Burton's Alice in Wonderland so it would instead be reffered to as Underland.
-Return to Neverland. But considering the drastic space between the original movie & this one (being almost 30 years) It most likely wouldn't return
-Toy Story 3. If the original or second Toy Story gets involved with KH3 then it could return as a new world in the new saga based on it's 3rd installment.
-Space Paranoids. If Radient Garden returns than with the 10 year gap Space Paranoids would take on a new form based on The Grid from Dream Drop Distance but with an original story.
Final Fantasy inclusions
Most if not all wouldn't return unless we were to make older versions of the FF7 crew. So instead I would add characters from FF1-6, FF11 & FF12 in a new world based on Dissidia. While characters from Final Fantasy XIII taking on their "Lightning Returns" designs and sorta replace the FF7 crew & the Hallow Bastion Restoration Committee. This would also help if Lightning gets in KH3.
Gameplay
The same as KH1, KH2 & KH3 but with multiple playable characters. But I would introduce a new element know as Keyblade classes. Like for example.
Neutral - A single Keyblade with a similar fighting style of Sora.
Dual Weild - Faster but weaker attacks
Buster - A keyblade the size of Cloud's buster sword. The attacks would be slower but devistating.
Dagger - Would have decent speed and attack but is more reliant or Keyblade transformations & magic.
Each class has the same list of keyblades but it's only their shape that changes. The also have different Keyblade Transformations.
These classes would work by pressing & holding the PS4's L1 Button and a menu between 4 options shows up and you would use the right analog stick to choose a new class. This idea would be similar to how you select weapons in GTAV minus the slow down so that the game would remain fluent.
But with different characters comes exclusive classes. One character will have all four of those but another would replace the dagger for something the suits more of an upclose & personal way of combat. Another would switch the buster for something that would be better for Magic.
Summons
Summons would act a bit differently. Don't get me wrong, they would stay with the same system but instead of the being based on certain Disney Movies they would be based on the shows to give them their own inclusion for the series like Kim Possible, American Dragon, Gravity Falls, Recess, Darkwing Duck, Ducktales & Phineas and Ferb without giving them their own worlds. Darkwing Duck would be in the story however as a masked crusader in something like Radiant Garden or Disney Town. None of the live action shows would be in due to how not many people really like them (with maybe a few exceptions) & you would have to use the actors likenesses unless you were to redesign them to be more Disney like.
New Worlds
Now let's get into the niddy gritty. However; some obvious choices like Frozen, Wreck-it Ralph or Treasure Planet will not be on here because I have a sneaking suspicion they will be in KH3.
-The Black Cauldron
-The Adventures of Ichabod & Mr. Toad
-Pluto's Judgement Day (in another Topic I've started on this Forum)
-Frankenweenie
-Disney's A Christmas Carol
-Meet the Robinsons (which might be difficult due to the laws of Time Travel already established)
-The Emporer's New Groove or Brother Bear depending on if New Groove gets in KH3
-Tommorowland
-The Sword in the Stone (depending on if Merlin's story would allow it)
I do have one idea for the story. In the original saga was about the heart, spirit & friendship. This one could be about how emotions work, color.
If there is no color, there is no emotion
If there is no emotion, there is no will to fight
If there is no will to fight, then everyone will submit to our righteous power
Along with the Heartless; beings made out of the darkness of people's hearts. Many would wonder what remain's of the light & the mind. In this new era light can be just as evil as darkness is portrayed. In the form of creatures known as the Aware. They would come in just as many numbers as the Heartless and similar forms, but they are more intelligent like the Nobodies, but also rely on instinct like the Heartless. In other words they'd be a hybrid. But instead of feeding off hearts, they feed off of other people's despair & sadness. They're like demons who find glee in making others suffer but both find glee in it & feed off it as well.
Someone could want to absorb all color from the universe to serve the helpless to both the Heartless & the Aware as an endless feast of hearts & destruction.
Edited by GothicSlenderman