Causes full belts to overflow at the end.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
this is hilarious. But what happens when you just connect a belt to itself in a loop and try to feed into that?
overflow will happen at sideloading, splitters, etc. basically anywhere an item sits still on a belt.
So this makes 2-1/1-1 balancers unusable, then.
Certain designs, yes.