About: Factorio 0.15 - Angels Mods, My Way - E18 REMOTE COAL PROCESSING (correct now)
Instead of moving around the pieces of your carbon setup so that you could direct insert from furnaces to liquified, you could have just adjusted the inserters to go diagonally and kept the design smaller!
Furnaces who work with the same item as they are fueled with will overfill the fuelslot. But only if the furnace doesnt have a recipe. So use Metal Mixing Furnaces who need a recipe to be set and you are good to go without overfilling the fuel spot.
Unfortunately, you can't compress belts with undergrouds or sideloading anymore. You need splitters. Miners also seem to compress belts now (0.16)
Moar coal! :)
Anyone saying that about Coal hasn't played with Angel 's mods before.