right now the system is pretty damn overpowerd. which is cool sometimes. but also.. well.

the solution cannot simply be "build more blocks"

I would love to see some sort of upgrade systems like we have for vanilla assemblers and refiners.

instead of simply building MOAR, we build one and upgrade it.
those upgrade modules could give us better range, speed and / or yield (affected area) per cycle.

same for build & repair. instead of simply plucking down god knows how many of the blocks, we build a few but upgrade them to be able to eventually cover the planned area.