Originally Posted by BMM
Or maybe it really does look bad onscreen and detracts from the actor's performance. For instance, Marvel has gone to great lengths to ensure that the integrity of the Avengers' uniforms remain intact, but they sure steered clear of adapting Hawkeye's mask, which closely resembles Wolverine's. Why?
I think because Hawkeye had no reason to wear it - it doesn't offer protection and he doesn't need to be disguised. Whedon also said he didn't want to hide Renner's face, saying it was too attractive to cover up.
There's no reason for Wolverine to have pointy-eared headgear unless some sort of ornate Japanese headgear could be made to look like the comic mask, without seeming too contrived.
Also, Catwoman's ears were only included when Nolan figured out a way to do it by making them hi-tech goggles pushed back over her hair.