Instead of just blurting out ideas, stop and think what is missing in the game play. Currently, we dont need another tank as we have the Tgr, Firefly, T34, Pzr4, and soon the T34/85mm. One of the gaps that needs to be filled is a tank destroyer. We have nothing that is dedicated to destroying tanks. We have a scout car, we have a gp scout/delivery, we have two halftracks capable for carrying troops, veh supps, or field supps, and we have 3 anti-air vehicles, too. Oh, and font forget the LVT's.
The M18 Hellcat tank destroyer would make a perfect fit. It is fast, with armor barely enough to fend off the 37mm AP, and has a 76mm cannon that is on par with the British 17lb cannon. Oh... and it is US made, too. Wasnt that one of the criteria of this post?