I agree. I find it very unintuitive that your familiar and other small summons/companions cannot enter burrows or anything like that. I play as a Ranger and I'm barely using them, I don't even know what they're really useful for. I don't like transforming into a Halfling or whatever. The fact the dead won't speak to their killers is also a strange and unintuitive choice as well. I think this is an oversight and suggests a more quantity-over-quality approach. Different animals like badgers, blue jays, hawks, etc. would also be a nice improvement.
