So the only Bonus at this current point is crystal miners (which isn't even lore friendly.)
We have Onyx, Reachglassed and Reach (reach still breaks the map upon loading)
Some suggestions,
Earth, tactical slots galore, Very very high population culture spread bonus.
Ship decommissioning Yard, (ship graveyard re placer) Increases ship build and repair time.
Ancient battle ruins (forget who suggested this earlier but not my idea) Forerunner hulks offer an extra tactical/civilian research station.
Premier Holiday resort, Population <5 But high trade income.
Major Inner colony, Bonus Culture and Population.
Major Outer colony, Minus culture, Bonus trade, less population.
Major defensive garrison, Bonus planetary health.
Military complex More logistics slots, Bonus health, quicker production.
Insurrectionists, (not my idea also) major reduced build rate, damage to structures, reduced planetary allegiance, and fluctuating population.
Agricultural society - does what it says on the tin.
Fleet rally point, antimatter charges quicker.
Military academy smaller population <10 haven't thought that one through.
Military proving grounds/ testing grounds Bonus tactical, negative population.
Also any chance you can add the marathon to galaxyforgedef?
Thoughts and any additional ideas?