I'd like to request that signatures with extreme flashing be prohibited. I don't want to suggest the removal of animated sigs, just the extreme ones that are developed to intentionally be disruptive / flashy at high rates of speeds. I'm aware these can be easily blocked with a plugin, but just thinking of the greater good I can't see any values these disruptive signatures provide. If some of these images were in a modern game release, the game would need to have a flashing message warning for epilepsy.
I understand this is a slippery slope as its hard to define what is "too much" but I think this can easily be left to the appropriate member++ to determine when the flashing/animation is "too much"