A big one that I already added to the main site is killing attacks. It should handle, as in just roll for, five basic effects:
standard (body & stun, seems to be working)
killing (body plus stun multiplier)
stun only (only stun damage)
body only (only count the body damage normally)
effect (add up the dice like stun)
Right now it only handles #1 fully, #3, #4, and #5 accidentally, and #2 not at all.
When setting up a power, I need a little dropdown to say what kind of effect the power/equipment has.