This setup is very similar to a 9p normal setup designed by bork jerfkin that I played in my first ms mafia micro game. At the time, the setup was thought to be slightly townsided.
I made 2 changes to the setup: Mafia had daytalk, and the Doctor was limited to 3 shots, rather than being a full doctor.
I thought about giving the mafia team an additional PR (rolecop), but was dissuaded by Cabd who did a quick review of the setup. He suggested an informed mafia role (knows that town has a doctor) at most. I felt that the mafia strongman ability was enough to tip off the mafia team to the presence of protection, so decided to go with my initial design tweak.
So far, all the games I’ve modded at m451 have been won by town. I’m not sure what to make of that, but I do think that m451 towns so far have been playing at a fairly high level. It may be nearing time for me to tweak my balance considerations a bit!