I know I'm being OCD here, but if those turrets have to rotate 180 degrees, it looks like they're going to collide with the body of the tank. It also seems like the turrets would start rotated to about 45 degrees or so, since they'll primarily be shooting down targets above the unit.
I like the general look of the unit, though

-wyrmmage
The best times of your life should not be when you're young, or else you'll live a life always dreaming of the past.