So an idea that i personally would find amazing and would really add to keep a smart/logic factory cleaner and nice would be the introduction of Small factorio like buildings that are designed only for housing complex circuit units.

Smaller outer building
Low amount of input output
Restriction from items coming in and out with belts maybe?
A size similar to the tier 01 Buildings.

This would make things insanely handy for logic factories / processing units.
Right now i tend to use 01's But they are so big for what i do with them, i spoke with a few friends and they seamed to like the idea so i thought id post it here.

Think of it like, little shed units but with a good amount of space for complex circuits that are around 20-60 logic units.

You're not the first one to ask this, and I like the idea too. It's on my to-do list to improve circuit performance for the update to 0.17, then I may add a tier 0 building just for this sort of use case.