I think the planetary industry needs a rework - I think factories should be more universal, than have 3... 4 separate installations (Construction factories, fighter factories, ammunition factories and ground force training facilities). Oh, and shipyards too (we have 3 different of these as well! Military shipyard, Civilian Shipyard and repair yard!
)... Though, I suppose shipyards can stay.
The factories are a problem. Or rather, the so numerous types of them, and not really a proper way to cenvert them...
Oh and... I'd like conventional industry to be buildable too - though, perhaps this can be circumvented by Data Base editing?