...why are people saying no because ‘it’ll ruin the kingdom hearts gameplay’ by that logic is the gameplay of every Legend of Zelda game now ruined? Or every Fire Elblem game? It’d be a completely different game and definitely non-canon. The kingdom hearts universe would be perfect for a Dyanasty Warriors spin-off. So many interesting characters to choose from to play as and a lot of creative freedom with heartless/nobody designs. Honestly I think it’s be awesome! It’s not like the regular kingdom hearts game would lose anything?