Makes sense. Currently it is about as descriptive as your own structure tooltips, maybe a bit less.
The main difference is that while "Pollution per second" or "Power Consumption" or "Crafting Speed" are pretty obvious in function....
This may or many not be clear.Spawn values for current evolution factor (0.73)
35%: Medium biter: 20 pollution
64%: Big biter: 80 pollution
I looked at it personally, knew exactly what it was communicating instantly, and found it useful. But I also am a modder, and I frequent the wiki, and I use Evolution GUI mod (the one that shows evo factor, time, light level, direction to allies, all that stuff) and so on.
As such, I already knew what the data meant, I just never bothered to manually calculate that information, or even look it up. I was more on the lines of, Evolution factor hit 25%? Better expect medium biters, and ensure I have enough red bullets being produced to deal with their armor.
That, and watching my pollution bubble. It just doesn't apply to me properly.