I've come up with another big user script:
The Reiconizer.
By default it just gives everyone who doesn't have an avatar (user icon) one from Wikipedia. But it can do much, much more if you go into the source code. You can:
- Replace any user's avatar with a different one (or none!)
...- Give your friends back their old avatars. Can't find it online? Use a data URL! For instance, in the case of Adul, I gave her -
him, I mean him - back
his pink-haired icon.

...- Give people more appropriate avatars. For instance, I searched Google for a red squirrel, of icon size, and gave that to RedSquirrel.
...- Only you can see these avatars, so you can use NSFW ones. Or animated ones. Or larger ones. The default size limit is 130x100px, but you can change that.
...- Try out a new avatar on yourself before inflicting it on the rest of us!

(But note that after a quick-reply it won't appear until you refresh the page.)
- Replace any board avatar with a different one (or none!)
- Replace whole sets of board avatars with different ones. For instance, if you uncomment one section, and replace the Wikipedia avatars with these:
Code:
// AnandTech Forums icons:
autoIcons.push('http://forums.anandtech.com/images/avatars/at/canoworms.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/wildcat.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/vulture.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/trout.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/tiger.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/snail.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/raven.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/penguin.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/parrot.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/lioness.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/lion.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/gorilla.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/eagle.GIF');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/dragon.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/cheetah.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/cat.gif');
autoIcons.push('http://forums.anandtech.com/images/avatars/at/wolf.gif');
Then
all the avatars will be one of those. This way you can get rid of all the new icons entirely!
Re-thinking the identification of avatars also led to a bugfix in the FTLook script. Apparently some people have (or had at one point) no designation as even "Member".