What I am thinking about is a way to change variable before the lobby start, like in my game the PvP/Friendly fire is always on, but would be cool if you can deactivate or enable it, the possibility to add a series how customizable options would really useful for a lot of people. And through variable will be the best way.
With String you can change the maps because the name of the map you see in the lobby is the same who is in the variabile.
With numbers you can change stuff like Numbers of bots, or initial credits when you start a match.
Boolean to switch simple stuff like toggle Friendly fire and stuff like that.
A great example of Lobby system is Barotrauma who is really good and complete about these stuff
