He'd offer them something different. Their forwards aren't famed for their clinical finishing.
But then Villa's chances often only come through physical effort and pace. I could see him being left behind every time they had an attack.
He'll be fine, he's never far from the 18 yard box so he'll be up there waiting for them.
It would be interesting to see how he gets on in the EPL. He can undoubtably score goals, but his ratio is nothing like Larsson's. I heard McCoist say recently that he has added more work rate to his game, not that he could have reduced it.
He would certainly have a point to prove, his record in Europe and against top 6 teams in Scotland is poor to say the least. I think last season he scored 6 goals against the top 6 teams.