This has got to be one of the more obscure things to consider... So, I think the inserter stack size override should be allowed to be SET to whatever value you want. Right now the GUI also doesn't allow you set higher than teh current research. Of course, the actual stacksize that the inserter picks...

I have a small yellow-belted green-circuit factory. I am upgrading to red belts, and expanding with more assemblers. There are yellow circles over the yellow belts to mark the upgrade to red belts. I copy/paste to create more assemblers, but it copies the yellow belt instead of the red belts that I ...

How is "There are no trains that can ever service this station" not considered a warning? A simple station that was set to "2" length trains instead of "3" never got any trains, and LTN doesn't warn me about that? If that's not a "warning" there ought to be an...