Doing some learning today, and I noticed that this mod was one of three in my load order that seemed to alter "RaceMenuAnims". Don't know if it's a problem or not, but the http://cs.elderscrolls.com/constwiki/index.php/Idle_Animations suggests that you place your animations at the bottom of the list to avoid this.
Might be something to note if you update again some time in the future.
Otherwise, this is a well deserved bump for a really cool mod.
True, but unfortunately this is false advice (I actually read this as well before I added the animation) since putting animations at the end of the list doesn't work. Unless you want all conditions from previous anim groups to be true for your new anim to work. This whole thing gave me quite a headache for just adding a small effect. There is no way to make new animations with their own conditions work without altering the RaceMenuAnims, it is always marked as changed if you add a new anim. You can delete the change with the CS or TESEdit, but it is not clear whether that is better than leaving it as it is.
I asked this question in the CS forum since I didn't want to alter any vanilla stuff. Some said I should leave it like it is, others said I should delete the change. Since deleting the change seemed more dangerous (the anim stuff is interwoven with each other as far as I understood it, that's why it is marked as changed in the first place) I left it like it is. Which seems to work even if other mods change RaceMenuAnims as well. Trollf on the other hand deleted the change for his Actors in Charge mod (asked him as well) and it doesn't cause any trouble either. So I guess it just doesn't matter.