As much as I would love more lively ears I think SE put themselves in a corner with Viera; it's very clear that they designed the ears to be able to accommodate hats and hairstyles (*looking pointedly at the awkward "lop" ears), but the ears are also to blame for the lack of initial hat/hair compatibility. I don't remember how Miqo'te ear animations look when they're wearing hats that aren't covering them up or putting them in pockets (if there are any), but I imagine that it would be a much worse situation with Viera. Granted they could just disable the animations or hide the ears in the hats (which I'm not a fan of racial features being hidden like that). In any case, I would be shocked if they ever got around to animating them.