Intstead of driving a Higgins why not have the Higgins be computer operated delivering us all at once as a mission? that way we will be able to overwhelm them in one large wave of Higgins without the worries of them picking us off 1 by 1...
You could join the mission by clicking an extra clipboard option and by doing so you can select either a GV or man a Higgins gun...
The mission will start on a standard timer.
the Higgins departure, land, and return unless shot dead, then wait 5 minutes (rearm and reload) and go do it again with killed Higgins restored...
Just a little thought into it...