So Galz - and this is a theory question - so go ahead and lynch me after -
But if claiming is bad for town - what is your ideal scenario (lets assume for one minute that you are town)?
Yes let's.
I'm not sure I understand the question. Claiming (in general) is negative all the way around:
Town claims PR: Scum knows the claim is likely true, so can take Night Actions accordingly.
Scum claims PR: Town must unvote, consider, and likely let the claimee live. If there's a counter-claim, yes, the scum dies but again, so does the PR (most likely).
Town claims VT: Depending on the situation, you should lynch them anyway - At least a PR isn't being lynched, and you've got to keep the Mafia honest (from making this claim)
Mafia claims VT: See above.
In VERY few situations do you claim anything if you're not L-1. Let's assume S_B is telling the truth and is town. His claim was accidental and not under pressure. So we don't lynch him. Instead we lynch somebody else. We've already decreased the size of the pool to 8, increasing the odds we force a PR claim; see above for the problem with that. But let's assume we hit another VT (remember, hitting scum falls under PR claims). Now we go into night with 1 VT dead, and 1 known. Add 2 Mafia, and that leaves a 20% per role that scum lynch something important. The longer you can keep your PM under wraps - even just a VT PM - the better it is for town.