It may seem smart to leave the AT's alone but if you do or let them stand for too long they will come blest the stuffing out of your turret and hop out and get the control point. Remember that the AT's serve as spawn points so they can deploy where ever they are. I think they only way to win with the rebels is teamwork (someone wrote about this on one of the boards).
One more thing I could do with out the dark troopers on this level. But hey most of the people that play them respawn every minute or so.
- IM A PIRATE