TL;DR
Make it so you could somehow clear the ground from biter's goop after you cleared a nest and preserve a terrain without just covering everything with concrete.Why ?
Now you can only place concrete on top, but then if you remove it ground would still be in goop, so you can have either dirty ground or plain concrete.Explosions can clear tiles from some decorative plants, but they don't remove goop from the ground, and it would be great if there was option to clear a goop but leave decoratives untouched.
