I am not a POB owner or an expert on the topic so my opinion might not be worth much but I will add my two cents worth anyway. From flying around Sirius as well as reading this thread it seems to me that there is an issue which exists with with abandoned bases. If this assumption is correct then why not apply a simple life tested solution to this problem as is being done everyday in real world.
In real world abandoned properties (taxes have not been paid, health violations, and etc. or simply abandoned) get reposed by federal, state, or municipal governments and then get actioned off. Can do the same thing here, first you establish a criteria of what an abandoned base is ( an example could be, hull 75% and the base has not been supplied for a period of no less then 90 days, or any other criteria for that matter) and then based on that criteria the base gets reposed by the Feds (Server Admins) or by local authority (House Governments) and gets actioned off. If the auction fails and the base is not sold it can then be destroyed.
I think this will add some activity to the gameplay that revolves around POBs. Like I said before, I am not an expert on the topic but it seems it might lessen the issue of the abandoned POBs and add some additional gameplay.