I guess it comes down to the fact all the star wars movies are pretty good. Some of them needed a bit more editing for a more cohesive story and flow (some Need LOTS, i'm looking at you CAnto Bight segemnt!). But in general, they are pretty fantastic movies...
TPM, Limit the Pod racing segment, take out the crazy racist stereo types, tighten up the storyline, rework the dialogue to make it less wooden and for heaven's sake- erase Jar Jar.
AotC- Find a better way to make the audience believe in the Anakin/Padme romance- cuz noone is buying that ****. Tighten up the storyline, rework the dialogue to make it less wooden and for heaven's sake- erase Jar Jar.
RotS- It was pretty good. Have two different coloured Lightsabres... how did this not get addressed? Infinitely cooler With a blue and yellow/green lightsabre. Tighten up the storyline, rework the dialogue to make it less wooden and for heaven's sake- erase Jar Jar.
They were pretty good movies- just needed someone to say "No, George- that isn't a good idea. Try <insert better option here>".