I work with animating and posing and it seems to me that for some reason every AO and the people that make them insist on having and using priority 4 animations. I can't make a simple object for people to hold in their arms that people can carry without them having to most times turn off their AO. This sometimes can get to be a pain for both the business as well as the client.
So, my suggestion is this. Poses/animations that are set to "modify rights" should have something in properties that allows you to change their priority. This could make things much easier for people in SL. For instance, ever sat down with an AO on and you're sitting in some odd way that doesn't work because your sit is priority 4 and cancels out the poseball? Set your sit animation priority to a lower number and you'll be able to sit, walk, run, jump, and whatever else without worries of having to AO Off just to do it.
Thoughts? It's nothing big, but figured it may be a good idea.