Would it be possible to add a config option to make the machines stop when they are full instead of spilling items into the world? An improperly set up machine can cause massive amounts of entities in the world.

Second, would it be possible to be more "aggressive" when adding items to the output slots. Currently it looks for the first slot it can fit in, but if it could first try to fit it in an existing partially full slot, that would help a lot.

This would be nice.. I never understood why they spill out and why they dont stack.