No it wouldn't have been they're all older especially Obi Wan Kenobi (although old age seems not to have mattered to Yoda in Episode II & III). The original trilogy when you look at it now was about the more intimate story of Luke and his friends and eventually his relationship with his revealed father Vader/Anakin.
Even Lucas has admitted that Episode I-III showed the Jedi at the height of the powers in the prime so to speak, hence the clone wars etc and all the epic saber duels againt the Sith.
I don't like the prequel trilogy much. Revenge of the Sith is good and Attack of the Clones is good in parts but really comes off as a bunch of actors standing in front of a blue or green screen especially the jedi battle on Geonosis. The only good thing about ep 1 is the three way saber duel.
Out of all the actors (apart from the returning ones in C3PO, R2D2, and Yoda) I think Ewan McGregor was the only one perfectly cast for the role, the others especially the usually excellent Natalie Portman seem to be sleep walking through their roles. I think Lucas made a major mistake in starting the saga off when Anakin was a little boy, he should have stuck with the same actor and started it off when Anakin was a teenager, that way the romance between Anakin and Padme would have been more believable. As it is Padme is supossed to be much older than him but with the change of actors and the string of events in Episodes II & III this is not really conveyed well at all.
One word .....LOSER!