Ok, in recent mafias i realized that it's a fatal game design flaw not to include plenty protective roles, because mafia has to be afraid every night too when they decide on the nightkill. If they don't need to go around traps and their only job is to stay hidden, then the game becomes unbalanced.
So far I only found 1 protective role, but even that protects only from lynches, so it's more useful for the mafia. And there are some other roles I found too that are very mafia-sided. This could be fixed by decreasing the number of mafia by 1-2.
Until it gets fixed, I'd like to stay out of this, even though it would have been fun to become Jon Snow.