Board Thread:Role Ideas (Neutral)/@comment-27939669-20170404185152/@comment-26234016-20170404201204

So:

As an explanation as to why roleswappers are rejected (if that seems ambiguous) here it is:

Fred is a Switcher. He switches with John, the Janitor.

John decides to switch with a Sheriff. Now that John, the Sheriff, and a former Janitor, knows the names and roles of each and every member of the mafia, he can easily let the town win.