I have to admit most of the Marvel animated movies were not the best animation, but Hulk v Wolverine was really good animation. Very smooth.
And they probably would have Mimic use his wolverine powers a lot, but I don't see them trying to fool people into thinking its Wolverine.
I think it would be a really good animated movie, especially if they got a good style for the characters and animation.
But I could see their mission, in the movie, involving Wolverine and/or Hulk. But really they are unknown characters, they need some known characters to draw in the general audience.
But with the Wolverine v Hulk v thor movie, I think the animated Marvel movies could become some good movies. Smart business ventures.
And i would LOVE Exiles to be one of them, as long as the animation is good.
I can even start to imagine T'Bolt, Mimic, or Blink, in action.