Hopefully you'll get as lucky as I have been with all seven of mine. They seemed to have worked all of this out, but of course, they all have their own personalities. I always sleep with my big teddy bear because I can wrap my arms around him while sleeping. Moose Type A is very dominant and can be somewhat abusive, but the others try to keep him directed toward certain nighttime activities, like flying into my wife. Moose Type B sometimes participates as well.
Fluppy the dog is very docile and kind as is Pockets, another dog. He's helpful in that he holds the clicker to the surround speaker. Harry the Bunny is also a gentle soul and he sleeps by my head, so he's satisfied with that. Both Mooses protect the bottom end of the bed and they feel useful doing that. You just have to delegate responsibilities to your friends.