I recommend moving the new animations to a sub-category of Emote Images, just like the Mantid and Ghost Widow animations.
WRT gender-based animations: There was a little bit of userpage discussion when I was uploading the contents of Mantid's guide, which resulted in preference to pictures of Ghost Widow over those of Mantid's personal character. However, since some animations change between genders, we should probably have both available, at least for those animations which differ.
My two cents: Stick with recognizable NPCs over player models. I think it makes the emote pages cleaner and more coherent, and it becomes easier to categorize the images themselves, too.