I'd like shipyards to cost an admin and to have a slew of available upgrades...
are required to build ever larger hull types
add stat bonuses to ships constructed there
allow parallel construction runs for smaller hull types
give gearing bonuses to sequential runs (a .9 exponent applied to the manufacturing cost of each sequential identical ship for example)
I want citizens I can station at my shipyards with benefits more varied than +X% Military Production as well.