[Suicide Junkie]

Note: If you think that I'm going to pay maintenance on a resource storage base for 100 turns, you're sadly mistaken.
Mothballed ships can still store stuff, so I'm just gonna have a pile of mothballed stations full of mineral storage!

The cost will be a one-time thing, just like the planetary facility, but it won't take up planet space, and will be more vulnerable to attack (maybe make 'em 50% armor, 40% storage 10% control?)