TL;DR Placing buildings on other buildings to combine them. What ? Ever wanted lamps on your electric poles, or long handed variants of all inserters, but hate the clutter of new recipes for very similar items in your crafting menu? What if you could just place one on top of the other? This proposa...

I feel like there could be room for a "No path" interrupt. Should a train not have a path to its next stop, it may be helpful to be able to order it to travel to a dedicated waiting area. A train stopping on a busy rail line due to not having a path could cause massive problems. Or, an opt...

TL;DR The ability to select areas on the map to control certain behaviors for various mechanics. What ? Selecting areas on the map to create new 'zones', to then selectively adjust how your factory behaves in those areas. Bot pathing and changing how alerts work are the primary use cases for such a...