So, since there is a radiation damage type...how about some radioactive madness?
Seriously, I'd like to watch my skin turn orange and have my eyeballs melt. This is probably like an additional add-on to disease I suppose. It'd be cool to have a geiger counter too, so you can brag to your friends that you're more radioactive then fiesta ware pre-50's (They used to gloss it with Uranium or something). Then of course we could have nifty mutations like fourth arms and dare I say...
KWATO LIVES!