My games tended to a lot of heat, too, in part because of the Tragedy of the Commons. One flamboyant, heat-attracting player punishes the whole gang, so I found players worried less about mitigating overall heat in the face of a Whisper who had no interest in subtlety.

There’s also some internal adjustment: once death has been the answer once, you might as well keep using it. More bodies won’t necessarily draw more heat.