Make the Diner Gang nonconsumable by Vamps and Lings

[franfoer]

Maybe there could be side-effects for each one. So Shitty Bill gives you neurological damage, Father Jack makes you permanently drunk, and Discount Dan...does something else, maybe a crank addiction. Leaves the option open to eat one for emergencies/subterfuge, but makes a round significantly harder if you consume all three.