I was interested in this change initially, but after playing a lot since then, all Unseen games are becoming a bit predictable with literally everyone claiming Butler. The Mastermind showing as occupy immune is leaving him able to claim: Drunk, Butler, or Hunter (unless he gets lucky enough to not get targeted by a Drunk or Butler). Hunter has been a long-time easy scum claim, and any Drunk claim is instantly outed as soon as the King dies and he doesn’t step up during royal blood.
So The Mastermind is most likely claiming Butler, the Assassin likes to claim Butler because of his poison, and you have the chance of also converting a Butler. It’s just very boring, and makes playing Mastermind a drag because you don’t get to claim anything fun. At least before you got to try with Princess, Sheriff, Alch, etc, and Observer for the daring.
Please reconsider the change you made; NO MORE BUTLERS. <3