professoryaffle pointed out that
Simon Pegg has been cast as Scotty in the next ST film (the one about the academy years of the TOS cast). No idea if he's suitable but he's quite variable so it might work. I guess he'll have to put on some weight again. ;o) IIRC, I haven't seen Chris Pine (Kirk) in anything so can't tell if he'd be any good but Sylar as Spock might just work. I wonder who they are going to pick for Bones...