Related to https://questions.satisfactorygame.com/27602/adjustable-stilts
There are legs / stilts underneath every machine / building that I can think of. Considering these legs adjust automatically on uneven terrain, it shouldn't be too much of a leap of imagination to allow those same legs to be manually adjustable, even on flat ground.
I would like to be able to route conveyors underneath the machines, or perhaps just be able to walk underneath them. It would give a little more flexibility with factory design.