[Snap Spelljammer]

It doesn't work very well when you are building a ficility that shares only some of the benefits of a different facility. For example, when you have the Shrine that gives happiness as one of it's abilities, and then build a Temporal Vacation facility.

I think 3 columns in the facility queue would be perfect. One column will show the total # of structures on the planet, the next would show the total for the system the planet is located in, the 3rd will show total # of structures in the build queue for that system.

It would look something like this:
003 024 005 Monolith III

This would tell me that I have 3 fully built on the planet, 24 fully built in the system, and 5 queued up to be built in the system.