The only reason I can't get behind gunner is having so few ziplines. I go between Engineer and Driller and when I see something out of reach I ask myself, "is this a 2 platform problem, or a 4 platform problem?" As a driller I just estimate the amount of drilling I'll get to do. I imagine as a gunner I would just be staring at all the things 8 feet up the wall and missing my other tools. That being said, I'm always so appreciative when somebody takes that burden to bring the shields and zip lines.