1 informative role: Cop, Tracker, Watcher, Roleblocker
1 protective role: Doc (other PR is macho), Jailkeeper, Bodyguard
OR
2 alignment confirmed masons
And
2 mafia goons
5 VTs
It is just a start, but I think it is possible. The informative role can't out himself since he doesn't know what the active/protective role is and the protective roles are basicly just helping town a bit. The only problem would be the swingieness with the power roles, since a tracker is worse than a cop, the same is for the bodyguard and the doc/jailkeeper. Note that roleblocker usually counts as a protective role, but is purely informative in this game.
2 PRs, all in combination with another: Cop-Bodyguard, Tracker-Jailkeeper, Doc-macho Roleblocker, Hider-Watcher, aligment confirmed masons
2 mafia goons (they know the PR combination)
5 VTs
It negates the swingieness form the other proposal, since the combination of power roles are determined at start. To solve the claim problem of the scum team, they know which combination is used. The problem with this setup is that the Power Roles will be put in a leading position since they have far more information than the VTs. However that may not be a big problem, since the power roles aren't leading the town in the F11 that much either.
Both setups are far from ready to play, but they are good starts to think about new setups. Feel free to discuss either my proposals or proposals made by others.