The other problem with gif animations is that you are limited to 256 colors, I believe the current image is a PNG file.
It would not be impossible to do something like a slideshow where we cycled through them all as well. Honestly, the entire website could use a redesign to have relevant content, and I've been thinking about it (just need to find the time...)
For the record, to whoever brought it up, the home page never contained any animated graphics.