Jahmene - No. I think he's just another McElderry and if he wants to stick around even slightly he's going to have to branch out his music career into other areas, like Joe with classical.
James - As Nicole once sang, Don't Hold Your Breath! He may seem very talented, unique, credible etc. now but as we saw with Matt Cardle, once initial "buzz" has fizzled down, he'll leave a lot to be desired, become ignored by his record label who aren't sure what to do with him/what songs to give him/whether to let him write his own etc. and then fade into alternative obscurity, claiming it's for the greater good when all he really wants to do is scream bloody Cowell.
Chris - Baloney. No. He will do nothing.