I think a point many of you are missing (and miss in every game) is that the "well, if we wait until we get the doctor to L-1 and then he claims we're so much better off" is false.
We are in a game where everyone, EVERYONE, has incentive to scum hunt. Mislynches in this game will not necessarily be scum-driven, and definitely less scum-driven than a game with only one scum team. So spending most of D1 trying to end up getting the Doctor to L-1 so that we have an L-1 wagon on confirmed town to study does very little good for the town.
What it does do it waste all our time so we scramble to lynch at the end of the day. What it does to is waste all of town's time letting us build a scum read on town.
There's no reason to believe a wagon built on the doctor, forced up to L-1, will be useful. And wasting our time trying to do that is silly.
I have said this before, and I will say it again: the best way to catch scum early is to reduce your lynch pool. Take out the towniest members from your consideration and focus on the rest. Sure, you could remove scum. But unless you are terrible or unlucky, you won't rule out all of them. Innocent Children and their cousin roles are the best way to do that.