+1
I'd even go further and suggest (if coding allows it) that everytime a base changes hands, random outposts spawn around the base, capable of engaging enemy GV forces until the human cavalry arrives, or until they are overwhelmed/defeated. I suspect a lot of the GV oriented players have the base layouts practically memorized, so they know exactly where to go and where to stop when they get near or on a GV base.
Camouflage them, give them effective weaponry, make the attackers work for the base captures when they go after an undefended base.