I don't know if this has been talked about or anything, but when building a base or cv/sv/hv it is annoying having to build something then redesign it all because you can't put something on a section that has an invisible block, like grow plots you have to make a room 2 large blocks high in order to put grow lights above a plot then you have to make the gap between the floors 2 blocks high if you want to put multiple levels on.
In the case of a garden, the two high rule is from the light in the center inverted on the roof. The other eight roof spaces in a two high garden are empty. You can choose to build a garden one high without a middle block (recessed light) or fill the eight blocks above grow plots in a two high garden with other blocks like containers or whatever. There are some invisible blocks (thin plate spawners in bases for example) that are a pain when you retrofit a POI into a base.
I just wish they would make the block the shape and size of the item being placed, games like No Man Sky, Green Hell, Fallout 76, and many others have it it and it makes game QoL alot better.