We all know that moves like Mega Flare and Tornado were only in COM, 3D, and BBS(and Coded) only because they had different battle systems for those games, and not hte Battle Menu from KH1 and KH2. Since KH3 is returning to the battle Menu system, do you think moves that were exclusive to BBS, COM and 3D will return, like Tornado and Mega Flare? They could be reaction commands, but the thing is, they were spells and i doubt they will be listed in the Magic menu. If that was the case, you'd think KH2 would've had them.

Bahamut summon pleeese square enix

I hope, they were AWESOME!

I'm sure they might be in there in SOME shape or form. If they go the Final Fantasy route and just make them part of an expansive magic list, that would be alright, or maybe they could do something like a "Magic Combo Chain" or something, like every successive Fire spell would be one level higher and as they level up more you would get more combo finishers like Raging Storm, Firiga Burst, or Mega Flare as the ultimate finisher. Either way, I'm confident they will be in KH3 in some way, but if they aren't, they will at least replace them with new even more powerful abilities.