About the crates, well its a bit hard to have the ship spawn inside the room in the base or underground haha. Yeah I also played a bit and I had problem with the economic tab with the trader I am going to rescale this now, if you see any other please name them. About the signs, I guess you are right, because the crate hides the bottom of the factory which displays what it produces. You got confused that there was gold at the gold factory? xD You get used to when you know that it spawns a crate. Although I will either put signs at the top of the factories or I will skin the crates just like the catapult has a small picture on its crate.So it is easier to differentiate what is what. I think its better to skin the crates because some people build factories one on top of each other and you have multiple crates next to each other. About the sub-type building, what system do you have in mind? Do you say having only 1 workshop but with 6 horizontal menues just like in the trader?