Now, onto my suggestion.
I had two new types on transport belts in mind, I understand that playing with the transport belts is part of the challenge, and these new ideas may make it easier, too easy according to some.
But before you say "Nah, it'll make it too easy", please take a moment to reflect upon my beautiful paint drawings.
Belt A
This belt is designed to allow you to move all the items on a belt over to one side, instead of doing to weird intersections we do now, forcing items onto one side of the belt.
It's simply a concept we all use at this time, but packed into a little more elegant, and less space consuming way.
Belt B
I don't have a fancy name for this, so I'll call it the splitter belt.
The belt itself is of course 1x1 to fit with the rest of your system (what's within the grey square), I did draw a few belts connected to it to show how it works.
What is allows you to do is splitting up the resources on the two sides of the belt onto two separate belts, this too is doable already, using filter inserters, but again this seems like a more natural, simpler, less space consuming idea.
Both of these belts may seem redundant, as their functions can already be done, but I like the idea of having different belts, and these make it seem more like the way transport belts are really used.
