Idk how to implement this here and it's fine when you can't or reject it. It's new ideas for me too.
Sabotage-Us-Gamemode/Contrarian-Tasks-Mode: The game mechanics or Imposters do sabotages, certain sabotage-fixes and continuing sabotages gives the crewmates/Imposters extra points/tasks in task-bar like imposters can turn off lights switch and if crewmates fixed lights, then they gain 3 tasks finished/points as a team. Maybe the imposters can even undo pressing hands in Reactor or undo typing codes of O2 from crewmates by typing as Imposters themselves correctly.