Random tip about trying to design cool buildings
I only end up trying to make three or four pretty factories in a playthrough, and I'm lucky if the rest look like they've heard of gravity. One thing I've learned the hard way is that if you're going to make a factory look pretty from the outside, think about which direction the entrance is going to point. I just spent half an hour laying out the foundations and exterior walls for a structure when I realized the front facade is pointing away from the direction from which I'll usually be approaching this building, so I won't get to enjoy the (hopefully) cool effect without making a big detour. So now I'm ripping everything up and starting again.