i had this idea for the yoda sidious fight:

after sid shocks yoda and he stands back up again, why don't we have him force push sid before he could finish his line "at last the jedi are no more" (or in my opinion replace "at last" with "soon") to show that he now means business.

during the scenes when sid starts shocking yoda again, let us at least see some elesctrcal arcs surging through yoda (like mace windu) to show that sid is starting to over-power him. then when yoda blasts him off and lands at the bottom, we should still see some small electricity still surging through him. (to show that he is now very weakened and isn't strong enough to fight again)

at least that will give us a better reason why he fled rather than the way it is in the movie.