Do you miss Trouble in Mineville, since it got removed from The Hive? I have tried to recreate this awesome minigame in this map and make it available for you to play with your friends again also in Bedrock edition!
Select version for changelog:
Changelog
I have updated the download link to the new one.
On the TTT workshop (On Steam), people have made mods for Gmod TTT such as TTT2 and Custom Roles for TTT. If I understood it correctly its possible that you assign base roles I.e Innocent and Traitor to everyone (So depending on players 2 or 3 players are given Traitor baserole and everyone else the Innocent baserole) then you can assign Secondary roles to the Baseroles I.e Detective and any other new roles you want. If you like this idea you can look at TTT2 roles here
If you add custom roles it could be a good idea to be able to activate and Deactivate roles so if someone would like to only have the 3 basic role they could or you could add role presets so basically different game mode with different roles.
3rd party roles that win on there own or change roles are often given to the Innocent baserole