I think logistics management issues are a classic example of "first world problems" in Factorio, but it did feel like a pain in the butt to manually manage personal trash slots, similar logistics requests across multiple similar objects, and whatnot.
I didn't know I needed a solution to that problem, and I didn't expect it to be specifically in this format, but I really like what I see. I especially think the named groups will go a long way in e.g. a multiplayer Factorio session where some people but not everyone is into setting up complex logistics systems, allowing everyone else to at least understand and use the system and its benefits even if setting things up is left to the experts.