Yeah, that's the same kind of number that this mod would display. But that's the use of that? When you're looking at pollution, you're worrying about where it is rather than how much there is in total. I don't see the point of it.
Warptorio2 says "Hello, and welcome to a warp platform where the pollution count drives fresh evolution on every planet you visit." :D
That said, the evolution factor itself is a good enough proxy--the "Warp Stabilization" functionality doesn't reset the surface's pollution anymore, so it's..less of a variable than it used to be.
As far as the research progress goes, it might be nice to have a setting for the time window for the average. There's a certain update rate and inconsistency magnitude outside of which I just have to disable UIs or get really...antsy. No pressure though; disabling it works just fine. ;)
Other than that...I agree with OP, nice mod. :)