Here's the one thing that I feel is really really important.
In-game voice chat. On the one hand, it enforces the "do not talk during rounds" rule. It also lets you work on things like "dead players can talk to each other at will" and "imposters can talk to each other during rounds in secret".
I consider this a like, top-tier addition that would make Among Us 2 one of the best hidden role games of all time.
They would need to implement voice channels and they can't currently scale the gameplay right now. Given most games that even have voice chat, have everyone just use Discord anyway because you need the matchmaking OUTSIDE the game in the firstplace.
Some kind of plugin for Discord/Teams/Slack would probably be the easiest solution.
I've thought extensively about Discord, and it doesn't work as far as allowing imposters to talk during the round. It would automate the dead/in-round muting, but that's only a small portion of the dope stuff.
Also, I've implemented live chat in Unity before, it's not really that hard. It's more network intensive but not really hard at all.
