When Kingdom Hearts 4 eventually comes out, it would be nice to see it shake up the series' combat, and watching FF7 Rebirth is one way to do that.

Despite Sephiroth being relevant again with the Final Fantasy 7 remake trilogy, Kingdom Hearts 4 should use another Final Fantasy villain as a boss.

Traverse Town deserves a comeback in Kingdom Hearts 4, with new possibilities through Unreal Engine technology and deeper story integration.

Characters like Eraqus, Xehanort, and Xion undergo significant growth and development throughout the Kingdom Hearts series.