Introduce guild flagships/space stations.
Crafted by shipwrights. Schematic acquired for 25,000,000 credits, and 100,000 rebel / imperial station tokens.
Once crafted, players can setup their flagship or station above a planet and set them to defend a space region. In doing so, a blockade is introduced over the planet. In order to bring down the blockade, pilots would need to blow up the ship (not a permanent destruction). Then the blockade comes down over the planet, and cannot be restored for 24 hours.