No; Temp resistance and easier movement.
Very true, I was only considering in-combat effects there, though to be fair you can convert ENDISWAL pretty early if you just want to punch a few holes in the wall.
I feel it should stay both on hit and on kill, but you heal 1 stack of curse on level-up and there should be a glyph that enables you to avoid the on-kill curse.
Instead of -50% resistances, make it 5 stacks of curse instead?
Definitely an option.
The issue I have with cursed is that for non-resistance builds, you can pretty much ignore it.
Curse affects a broader range of characters than the old resist-down effect. It affects temporary resists, damage reduction, and it affects people who obtain resistances after falling prey to a curse.
Also, with curse being added there could maybe be a way to removing it by paying money? Like a potion? Or something?
Because curse heals naturally as you kill monsters, I don't feel this is necessary.