EGO_CBJ

They were produced in shipyards in X3AP, and I believe the rate was limited, but the production did not use actual resources from the economy to do so.

This is where I say "free pizza", right?

No. They don't fit with the rest of the game mechanics, and they make strategy obsolete. We have looked at the ways people have suggested to limit them, but they are all either ineffective (i.e. they still make any kind of territorial claim or placement of obstacles useless) or they make the jumpdrive itself pointless because it can no longer be used to do anything useful.

These things are on our radar as features we would like to add, but probably not in 3.0.

We do plan to improve crew levelling, yes.