Greedo or Boba sounds as silly as Dooku to me.
LOL, don't get me wrong, I do claim that most of the PT names are silly, but I want to be fair - so I must admit that not all OT names are cool.
I find the idea of putting the names from early drafts quite interesting. Even if they sound a bit silly (Mace Windu?). Having read those drafts, my mind marked them as "earlier revisions of Star Wars", as if it was the "past", and since Prequels are supposed to show us the past of SW Trilogy... you get the picture?
BTW: don't you think that SW should avoid Earth-sounding names, e.g. common English words spliced together? Starkiller or Skywalker sound great (strong, good for warriors or kings), but doesn't this strip the SW universe from its uniqueness? Since "shooting turkeys" would be bad, but saying "shooting mynocks" is ok.
Would you like SW characters with names like Goldbaum or Kowalski?
And Now, For Something Completely Different:
How about making those existing names sound more serious?
Dooku -> Dook (a bit like "duke", don't you agree?)
Greedo -> Gredder
Jar-Jar Binks -> Jarren Binnk
... (add your own here)