I've always criticised Cosgrove, but at the moment he merits his place in the team. If we play proper football rather than hoofing it up to his head, he's actually done fairly well. I would like to see Wilson in the team alongside him, or just behind him though.
Curtis Main is just a Stevie May replacement - he'll get on when we need someone to run around a lot and defend from the front. He'll not score or create many.
Hedges I think will be good, as will Gallagher, but only if we play proper football (as we have done in the home games). Ojo I think will be good, but he will rely on movement ahead of him - his default will always be to keep the ball, so unless there's good movement up ahead, we're going to see a lot of sideways passing from him.
Leigh looks decent and will be fine once he settles in fully I think. Taylor should be filed alongside Logan - defenders who will cost us goals through lack of concentration and moments of madness.
Bryson could turn out to be a disaster of a signing if he doesn't get fit soon. I'm not entirely sure how he'll fit into the team anyway as I can't see McInnes dropping Ojo or Ferguson and I think we need someone like Gallagher or Wright in the advanced midfield position to provide more pace and running than Bryson will offer.
I think it's been a decent window, but the success of these players will be a lot down to the style of play we adopt.