Option to tie biter strength directly to how polluting you are being instead of how much pollution you have released as to make a viable method of playing adopting solar panels efficiency modules etc.

Something similar was done by the "Rampant Evolution" mod in 1.1. It is now abandoned.
However, it was very capricious in use. With the slightest error in the settings for a specific mod build, the evolution rushed to zero or, on the contrary, grew too quickly.
I am, perhaps, glad that this mod is no longer there