While I wait for more input on the Diffusion of Power setup, I'll bring up a different setup.
Upon seeing Xalxe's Marathon game of
Switch, it reminded me I wanted to reintroduce this setup into the mix, because it isn't broken or overly unbalanced - I think the Switch mechanic needs tweaking though.
It doesn't make sense for the SK to have the opportunity to veto every switch, particularly when it's vulnerable to the Cop and the Vig at night. It means the decisions at night are fairly automatic, as the SK is more at risk than the mafia by gambling on letting the Cop or Vig use an action (presuming the mafia don't Switch them off) - the SK should leave both those switches off each night.
I think a much better mechanic is the Mafia having control of the switches while the relevant mafiosi is alive, but the SK instead of vetoing the switches it wants off, simply reverses the state of the switches that the scumteam leaves them in. This makes a more interesting dynamic at night that isn't completely predictable. It's also deliciously wifomy.
I like the night start for the novelty of it, but I think the SK should be innocent to the Cop for balance reasons - it is already up against potentially two kills a night and no kill immunity, so it should at least be safe from the Cop. I also think with a nightstart, 13p (an extra VT) would make the game a little less swingy overall and slightly reduces the chances of a D2 massclaim being beneficial to town if they catch the right set of night actions on N0 and N1 (one more VT slightly thins the ratio of confirmable town roles to non-confirmable roles - a problem that sometimes can affect open setups).