While custom allows any role list ect would be nice for more freedom. I think bringing more options to this mode would breathe some fresh air into it
Custom Options
1.Disable Last wills / Death notes.
2.Disable Whispers
3.Disable death announcement
4.Enable Traitor (1/2) - Will automatically set one or two members as a traitor to the Mafia, [Coven] (Possibly) vampires, Will disable VIP and Lovers [Will be random if more then one faction is in play]
5.Enable Vip - One member of the town will become VIP, automatically disables TT/Lovers and enables disabled whispers..
6.Enable Lovers (1/3) - a pair of 1 to 3 people will become lovers Automatically disables TT/Lovers
7.Uniqueness - Enables all roles as unique
8.Disable roles spawning - be able to disallow roles in random slots.
9.Double mafia - make it so there can be two mafias who act like separate factions (Same can apply to Coven).
10.Neutral Killers win together - This would make all Nks win (possibly have night chat) acting like a spooky action
Also I think Custom instead of rapid mode should have Public and private mode, Public allowing anyone to join like normal while private you would make a certain code or password to enable people joing your private one (also allowing people who already queued up with you to join).