Route your belts freely underground.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
belt sorters are kind of like splitters, but only 1x1, and for several reasons are much more usefull (https://mods.factorio.com/mod/beltSorter)
Did you see that I added splitter support?
Yup, but I use sorters much more than splitters, and sorters don't cause trouble for being 2x1
Still, you're right, you added splitters, sorters are not really necessary
