So the number of blocks in this mode is huge, and I really only use the ventilation shaft blocks, so I'd just like to request a separate entry in the workshop just containing those blocks, if it's not too much trouble.

While I'm here I also have a few requests for those ventilation blocks.
1) I actually prefer the old models for those, having a floor and walls to the blocks makes vertical passages awkward, particularly with the T block.
2) I'd like to request a block that you can pass through in all directions that also functions as a conveyor
3) As pointed out in other discussions, the air vent block for the ventilation shafts doesn't work quite right, the side that can accept conveyor connections isn't a valid mount point, and the opposite side seems to prevent oxygen flow
4) It'd be nice if there could be atmosphere inside these ventilation tubes, but I can see how that could be a significant complication, or even impossible.