You can physically edit each of your weapons to make it stronger in certain fields and magic actually acts differently at higher levels. Like how Cure heals you, cura heals you over time and Curaga gives off a healing field. I actually found myself using Cura more than Curaga in Days. That's a main concept I'd like to see in future Kingdom Hearts games. And of course the other panels can customize but those are pretty normal abilities for Kingdom Hearts.
Customization.
You can physically edit each of your weapons to make it stronger in certain fields and magic actually acts differently at higher levels. Like how Cure heals you, cura heals you over time and Curaga gives off a healing field. I actually found myself using Cura more than Curaga in Days. That's a main concept I'd like to see in future Kingdom Hearts games. And of course the other panels can customize but those are pretty normal abilities for Kingdom Hearts.