Alright, here’s my take on this. All changes are for the theatrical versions of the movies, except ANH which has the “Episode IV” subtitle from 1981.

ANH: Redo the spaceship shots to make them more dynamic (like what the SE did, but better)
ESB: Add more windows to Cloud City (again, like what the SE did, but better)
ROTJ: Replace the Ewoks with Wookiees
TPM: Get rid of the stupid accents on the alien characters
AOTC: Rewrite Anakin and Padme’s romance to make it believable
ROTS: Rewrite Anakin’s fall to darkness to make it believable
TFA: Remove Starkiller Base’s planet-destroying laser
RO: Rewrite the characters to make them more memorable
TLJ: Rewrite the subplot so Poe replaces Rose
SOLO: Make Han less sympathetic and more ruthless
TROS: Replace Palpatine with a cult leader who communicates with Sith spirits