in the originals, Ford, Fisher, and Guinness, brought alot of personality to their characters. Would any of us have even cared about Ewan's Obi-Wan if it wasn't for Alec Guiness?

and Lucas' sense of humor is so awful now. the only scenes you laugh at aren't intended to be funny. ok well everyone did laugh when Yoda took out Palpatine's guards like that, but still, there's no great lines like "Traveling through hyperspace aint like dusting crops boy".

I mean, when a little green puppet out performs your primary actors there's a bit of a problem.