I think that the constructors crafting abilities needs a bit of tweaking. For example, a large constructor can make a CV's LVL 20 mining laser, and LVL 12 rocket launcher. But, it cannot make projectile turrets. (cannon / minigun) Also, the only CV ammo it can create is projectile rounds. While I can understand that making the warp core / tank only available in the advanced constructor encourages warp SV use, I cannot think of a reason for this restriction.
I had a somewhat related thought about this earlier today. A long time ago I suggested construction drones as a replacement for the factory. This thought somewhat builds on that one, and links to this thread. The thought was, you place the raw materials into a container on your BA and the BA's constructor uses those resources to build components for the workshop item you are trying to build. This would limit the factory/drone to building devices that the BA's constructor can fabricate parts for. Try to build a warp-drive equipped CV with a large constructor? Nope, you have to wait until you have an advanced constructor for that. Just a thought.