[LGM]

Facility Management: It would be nice to plot facility replacement in the construction queue and to repeat this item. For example, Replace Research with Intelligence. When the turn for this item comes up, it will scrap a Research facility and build an Intelligence facility. This would allow you to change the function of a planet without having to either go back to it each turn or to prescrap everything before starting to build the new stuff.

Blocaded planets should only be able to utilize resource equal to their own production per turn.
Or production + 1/10 of their storage (1 yr rationing). Better yet, blocated planets should have their own resource pool (cut off from the rest of the empire).

Partitioned Empires should have resources pools per partition. Partitions are created by cutting warp-points (no known connection path), enemy occupying warp-points.

Occuppying warp-points should cut enemy contact links through those warp-points to other races.