I just found the ending flat tbh. Sora maybe killing himself to save Kairi is something I already saw happen in KH1. It's not like Sora's character development throughout the story has lead him to the point where he is willing to give up his own life to save someone he cares about. I imagine that was the heart-wrenching Nomura was trying to get at and yea it sucked Sora is not there but it did not make me more excited for the sequel games.