I think the effects bother me more than anything else, every time that CG Yoda pops up I just can't help but stare at how fake he looks. The effects look incredibly dated and distracting already, even more so than the old effects in say, The Empire Strikes Back.

Probably would've been best if Lucas just penned the overall story and acted as a general advisor, and let other directors and writers and everything else handle the actual production. He doesn't seem to trust other people with his "vision" for some reason though.

Pretty much all the actors did a terrible job in the prequels. Its not their fault though. Portman can act, Neeson can act, McGregor can act, Diarmid can act alright perhaps Lloyd can't. Christensen can act too.

I think is says a lot that Lucas managed to coax a crummy performance out of someone as experienced and talented as Christopher Lee.