Traore is a tricky one. Definitely looks much more at home behind the striker, and he's one of our best players when fit. But then, I suspect Rosenior plans to play with two out and out strikers a lot of the time, and in that scenario Traore would have to play on the wing to get in the team and I'm not sure it's worth having him there ahead of an actual winger.
Brownie used to play a 4-3-1-2 with Geo in the AM position behind King and Cousin. Always felt it was a bit weird having a single central midfielder in there but it seemed to work against weaker teams.