I absolutely LOVE among us and i have a feeling among is 2 will be NO different so here are some suggestions! (I dunno if certain roles will be able to help the team in ways ONLY they can if they will have certain tasks but i would like BOTH of these things to be in the game.)
Whisper: impostors now are able to "whisper" when nearby to each other and will be able to talk but if someone gets to close they'll "hear" them and can report.
Duo tasks: like the reactor meltdown sabotage these tasks require 2 people (or more) to do. Some may require certain roles and people might need to "alert" other people to do these things.
Entire team tasks: everyone can do this task and if one does the rest wont need to do it.
Medic: Medic will have medbay related jobs for example: inspect a virus.
Sneak: a sneak is a new impostor with a dash ability with a cooldown the dash will make them move in front of them a certain distance in an instant and will always make them look black while dashing so they can hop from shadow to shadow.
Receiver: new crewmate that has communication related tasks. Example: receive message and share it with the team. Special: can "whisper" with other crewmates or impostors if they do whisper with an impostor but they cannot vote while whispering.
Electrician: new crewmate ha electrical type tasks. Example: fixing machines.
Scientists: new crewmate has science related tasks. Example: mix chemicals.
Gunner: new impostor can kill from farther away by shooting but will not dash towards them while killing and has to "reload" making the cooldown longer.