Why not add "Impostor Conditions"? (Basically, make an Impostor have a chance of being either deaf or blind, blind wouldn't see crewnates, but would literally track them down with the mere click of a flashlight and deaf don't have access to the map's Crewnate tracking function, but have an ability to temporarily see Crewnates through walls.), some more spice when looking through the cameras (Static effect and some buzzing.), perhaps some actual hands in the characters and the ability to go prone? (In case you can't hide under anything, you can hide from the Imposter that way.) and change the Sprint to a stamina meter?