There have been some times when I really wished I could use an animated GIF for my avatar, but I still don't think it should be allowed. It would be waaay too annoying. People would push the limits of SFW/NSFW and make it more awkward to browse this forum in a professional environment.
I still really wish I could view one post at a time in the the Hume thread on my mobile device (maybe swipe through one post at a time). That way, mobile devices can handle the huge images on that page just a little bit better. I haven't bothered to figure out Tapatalk yet. My brother complained about all kinds of problems with it, so I'm not sure if I want to bother with it.