So I will get into my reasoning more specifically.
Scum has one top priority neighborhood to kill from: the Doctors. As long as the Doctors can use their power, the mafia cannot get rid of the IC. There is an about 38% a priori chance that scum is not in the Doctor neighborhood. If that's the case and mafia is also not evenly distributed to the other QTs, that's a big upside for us: Scum have to guess who's a Doctor and if they get if wrong, gkrieg will remain alive one more Day.
I understand that you're worried about people not letting others claim at L-1. I am too, to an extent. I kinda hope that as long as we have an IC around, that policy is just a little more enforceable. Like, we could all agree that the hammer should come from gkrieg, and if anyone breaks that rule, they get instalynched the following day. And then we just hope that town does not mess up. And if they mess up, well at least we get to blame someone else for losing the game.