Could you just add a flippin’ switch to the “Choose Role” menu that allows you to turn on and off the “Monster in Party” setting?!?! Please and thank you.
Leader would have full right over whether or not the party can be separated by this and if he sets it to “no” then the fifth person will always be Monster and if he sets it to “yes” then anyone can be Monster.
Seriously. It’s such a simple fix to this whole ridiculous problem that’s been present since launch. Just make it an option and be done with it. Gosh.