Only one of those that bugs me is Simon Pegg. He's a kinda funny original character but he doesn't really resemble Scotty at all, who was pretty calm in TOS. Hope he tones it down in this outing.
Simon Pegg wants Scotty to be a more serious character in the vein of TOS, but Abrams and his cohorts insist on making him a purely comedic character.
And really, out of that above list, the only case of recasting that was questionable was Zefram Cochrane. Don't get me wrong, James Cromwell was perfect for the role, though he was older than canon said the character should have been at that point. Then again, Braga and Moore didn't want to be slavish to what was established about him in TOS and at the early stages of planning had even considered making the character a woman.