Don't make it harder for groups to assault PoBs. Just reward the players of PoBs that have made an impact on the server (great & numerous roleplay being the primary goal) with something permanent. They've put a crap ton of work, time, and credits in their PoBs. That shouldn't just disappear in an "instant." And then there's the cost of doing business, the house wants money, the pirates want money, everyone wants money. The PoB misses a payment or two, boom, there goes the PoB.
Good bye my friends. Good luck in space. Fly safe.