i just had an idea for a new wrinkle for a future Rampage - SD "Hardcore", a la Diablo II. In short: All PC death would be permanent, no cloning.
I actually don't think that "zombies" plus "hardcore" at the same time sounds like a lot of fun. The way I imagine the "hardcore" is, regular SD world, yes cheap wares and free flowing chy and UE, no extra difficulties beyond the standard IC hazards (including players).
But that's just me.