Honestly so excited to hear this, I just got the game recently and have been having a blast playing it, and it sounds like the few small issues I have had with it are going to be addressed in this sequel! More roles means more variety to game play, more players means potential for larger more chaotic groups, possibly more maps means even more variety, this is just what I wanted to hear!
There's 2 things that I would super duper love to see in a sequel though if you guys are interested in taking player ideas:
1. Player made maps, could be done on steam through the steam workshop, though I don't exactly know how you would make it work on other platforms. Modded maps in a game like this add SO much to the experience for me.
2. A built in voice chat system, whilst using discord does work, it would be nice to not have to explain to people every time they play for the first time that you have to mute during matches. It would just simplify the whole thing a little bit more.