You haven't seen the little work-ups they did in the Heavy Gear Assault concept art for the LAC, have you?
Great work there, looks like an upgraded AK-47 on 20mikemike steroids. Really great stuff.
But yeah, the DPG is a classic. Unfortunately for the board game, it's kinda of... well, puny. When you can create your own little list, most folks want to go with a bruiser like the Medium Bazooka. No surprise there. But then, being an ex-tanker, I've always held a little soft spot for the Aller and Visigoth, and the newest NuCoal designs, the Fusilier and the Voltiguer.