This kind of sounds like town of salem, but I’ve never played it before. If another participant doesn’t join I’ll take their place, but in the meantime I want to see how the first game goes…
There are multiple mafioso. Most will be standard, at least one will be a Don, and there is also exactly one Psychopath. All members participate in the same secret group discussion/vote at Night, so even if there is only one mafioso left and it’s a special role like the Psychopath, there is still a Nightly kill per that vote (even though he would be the only voice at that point).
Perhaps, but from my own experience in playing forum Mafia games, it tends to go smoother when the discussion and votes are left to happen freely, rather than pressuring people into making unwanted choices early in the Day phases. It also helps ensure that people who vote provide some reason for their choice (lest they appear suspicious).