I actually just played a all any game where I didn't kill anyone until the last night when I killed the last mafia. I was VFR'ed day 2 and since there was no evidence, Everyone believed my doc claim. So sometimes, Ultra passive works.

What if there was a mix? Let the Mafia do some work, then kill like about 2 people each turn?

I'm not sure I agree that passive play gives you enough of a lower chance of detection to be worth your while.

Detection is 75% randomness, 25% deduction. Yes, you won't get spotted by lookouts, but sherrifs and investigators and jailors can still nail you in a random check and likely will if you aren't eliminating townies left and right. The less townies, the less chance anyone's around to spot you. Play too passively and you'll still get caught, just slightly slower... while you're also winning the game slower.

Sorry for my spelling.

Also its also good to make a fake note if you wana say that you are doctor or investigator when you get jail. In this way when he ask for your role you can give him convincing proof that you are that role because if you copy and paste your fake note to the chat (if its allowed) its more then enough proof to prove that you are innocent.

Thanks dude, this helped me a lot!