Just read an interesting article about the M-3 Gun Motor Carriage in WWII mag. Developed pre-war from the M-3 chassis with a 75mm cannon that could penetrate 3 inches of armor, it was intended as a defensive tank destroyer, but saw a lot of offensive use as well against both the Germans and Japanese.
It was a hair bit slower than the standard M-3 variants and slight up-armored. Wonder if it might be interesting enough to add into the game?
Thoughts, anyone?