Quote: "Totally random question - is it possible to make the paint brush be square instead of a circle?"
You answered your own question, obviously, but I have to ask, were you trying to paint pavement on the terrain or something similar? The reason I ask is I've painted alley ways with the current brush and that's fine. it would be nice to have a square brush, though. Hopefully when more terrain textures are implemented that will be possible. In the meantime, we have to add assets to do the same.
Desktop: i7 4770@3.4Ghz (passmark 9809), 12GB RAM, Win 10/64, GeForce GTX 1080 (passmark 12006), 1TB SSD, 1TB HDD; Laptop: i7 4800MQ@2.7Ghz, 16GB RAM, Win 10/64, GeForce GTX870M , 1TB SSD.