Keepstars are huge extra large citadels of which only one exists so far. Wormhole dwellers alliance Hard Knocks built the first and only one in a C5 wormhole system, an amazing accomplishment not only for the cost of the BPO, materials, and construction, but also the danger in transporting from high sec to the wormhole and then build the citadel in space. Kudos to them. Fort Knocks Keepstar will always be remembered as the first.
But it does create a bit of a conundrum.
You see, this impressive feat of engineering creates a structure with massive stats and defensive capabilities in an area of the universe that is notoriously easy to defend with determined pilots. And the extra large citadel is designed to combat against fleets of capitals and super capitals. In essence, as long as Hard Knocks has pilots the citadel is extremely difficult if not impossible to destroy since an opposing force would have to work around the clocks for a long period of time against hostile residents to build up the military force to even challenge the doomsday wielding structure.
The irony that the area of space never initially intended for long term occupation and pilot safety now has one of the most unassailable player owned structures in the game is not lost on me.
While I like that wormhole space has evolved from the initial vision of CCP designers into something wholly emergent I have concerns that wormhole space is going to eventually because a series of next-to-impossible to dislodge large and extra large citadels where pilots are only evicted from internal drama or burnout. This is the exact type of stagnation FozzieSov was created to disrupt in null sec.
I suspect CCP will live to regret allowing extra large Keepstars deployed in wormhole space as long as there is no efficient way to bring a large fleet quickly.