What are the odds the names are going to be as fucking doofy as they were when Lucas was supervising things?
IIRC, Lucas revealed that (starting late in the original trilogy) he used his kids' baby-speak as inspiration for most of his character names. Or thin references to Darth Vader.
I'm sure he's been stockpiling names, I'm sure they're the sort of thing he'd be including in his outlines, and I don't think JJ would change them if they were given to him. Maybe he might change or adjust the worst of them. Stacking those odds, I guess I'd put a 50/50 number on it.
It would probably depend on whether JJ would want to capture Geroge's inimitable style, or if he would want to go back to the beginning with more "normal" names, more in line with ANH.