If the base, regardless of where it is, or where it spawns can, will, or does cause my side a problem holding captured territory then it must be controlled.
Keep the enemy contained, I have no problem in saving these bases till the last. Let them out and I'll take care of it my way.
That seems simple enough, now the friendlies that like to rumble in tank town have a real agenda that means something to them personally.
Good Hunting,