I will play Devil's Advocate however. The bases currently in minefields are some of the oldest POB's in the game, meaning they have had their purpose and locations RP'd by long standing members in this Community. Not wanting to destroy or severely alter this RP, the Admins decided to allow existing POBs to be grandfathered in when the current 15k rule was established.
I support the rule change, for the sake of improved gameplay, however it would be wise to consider what effects said change would have on members who may be forced to have their POB's moved. Maybe some sort of compensation to soften the blow might be warranted?