First of all: Great work! I absolutely love the mod and for me it works like a charm, I would not want to play Factorio without it anymore.
I've found a minor design issue: In factory 2 and 3, the walls are on layer 70 while in factory 1 they are on 30. That makes floor tiles (brick or concrete or whatever mods may have additional ones) look weird near the walls in factory 2 and 3.
Also, would it be an option to you to make the mosaic in the middle of the factories optional in settings? The factory size might be apparent enough for some because of the size and the wall colors.
