Now that I've written the word "epic"
Exhibit A. A list of actors he's reused in the past:
Now, I'm not saying that none of the actors he's used before should be allowed to participate in this new trilogy, but there should definitely be rules. First thing's first, no Star Trek actor should be allowed to be in the new Star Wars trilogy. It's the principle of the matter. Not only is it not fair to nerdy actors everywhere who would kill to be in this new saga, but you cannot mix the fan base. It would be an injustice to Trekkies everywhere. They're very sensitive. (See the film Fanboys for an in-depth explanation.) Secondly, let's not pretend like everyone can be in a Star Wars movie. It's going to take a lot more than makeup and costumes to make Scott Foley ("Felicity") or Bradley Cooper ("Alias") seem like they belong in that universe.
As for the actors he's worked with that could pass the grade, I would say...
Regardless of who Abrams casts, it's clear some actors will be more eager than others:
This is Grunberg's Geek magazine cover from 2007.