If I had to choose between getting more hats for my bunnies and having ears that move, like real animal ears do, I'd rather have the moving ears. Especially ears that move to express emotion.

I'll bet some other long-eared races would, too.

However, I'm under no illusion that this would be easy to do.
The only precedent is that tails are animated, so maybe it's not too far fetched.

Either way, I'd be very pleasantly surprised if Dawntrail included this as a feature.