Day 4: I was a bit too busy to do much.
Day 5: I've been playing with mountains/hills. Not overly happy with them but I'm going to try some different colors and transitions into the ground. I don't want anything too complicated to tile, but also not so simplistic as a single tile for a mountain (like Advance Wars has). And ye, I changed the "water" coming out of the pipes, green with brown questionable things floating in it is a lot more fitting! Tomorrow I think I'll work on units, as I'm quite happy with the selection of terrain now.