In-Orbit Base, Space Shipyard

the ability to establish an in-orbit shipyard after a set of requirements are fulfilled.

An example of how this can work:
1. Make a space station with a lot of storage, also some specialized parts meant to assemble and launch rockets from.
1.5 (this can take a lot of missions to do)
2. If there's enough stuff on the space station, you can launch stuff from it.
3. if there's not enough stuff, you can't.