I remove Lea by giving up Axel, who is not the same character for me (I hate Lea, I like Axel).
I remove KH3 ptsd Aqua by giving up 0.2 Aqua.
I remove Nameless star by giving up Stella in FFXV. Oh, wait...
To be honest, I'd leave the KH series as it is, ups and downs, light and darkness. I...