Workshop

But don't the Mafia often make stupid mistakes, get high, and lose?

Well, it's harder for the yellow team; they have their people not only in the chat but all over the city. And the city also has fun; they expose the connection, so it's hard to tell if it's the Mafia or the yellow team.

Flu-u-u-uders.
The Mafia are powerful there, especially the red one. The blue Mafia is drug-addicted; when they lose half their team, they automatically disband, and it's quite possible that they immediately join the red team, while the yellow team is a typical town with one and a half abilities. So, at least for the sake of the experiment, it's worth trying, I think.