I'd absolutely support changes that allow all enemies to enter and exit caves and dungeons. I wouldn't complain if they tweak burial chambers so skeletons aren't stopped in their tracks by the slight step at the entrance, too.

While on the topic of caves/dungoens I find troll caves rather small and uninteresting.
Hopefully they plan on expanding them a bit in future updates. Heck, I'd love to see slightly larger dungeons and caves in general! Imagine a troll cave that houses a small family or clan of trolls instead of just one.