TPM: Remove Qui-Gon - replace with Jedi Knight Obi-Wan for most the movie, and have an older Anakin fill in for Maul fight
AOTC: Anakin and Padme have chemistry
ROTS: Remove that Yoda fight

ANH: Perfect
ESB: Perfect
ROTJ: Wookies replace Ewoks, with Chewie given a “Jar Jar” sort of character arc

TFA: No Starkiller, film centered around the search for Luke
TLJ: Fewer subplots (ditch Canto or Holdo plotlines)
TROS: Palpatine = Snoke (not sure if this is true or not, but atm having both the big bads messes with cohesion)