i would really enjoy scooting around in a crusader MK3 in flanking attacks (What they were designed for) Even MK1 with the 2 pounder( this may not be reasonable for MA play due to these guns not having HE capability now i think about it )
I think we should decide the firefly is a US tank and have the cromwell.
Ok its got a suspect basic 75mm gun but 40mph makes it a British Cruiser tank. The power of the basic gun is offsett by being able to get in close using speed. We have had tank kills in the M8. The Cromwell would give us something that would make the Tank battle more fluid with flanking manouvres and the need to get up close.
The US tank destroyers are too vulnerable from the air and we have enough German and Soviet tanks for now. Japanese Tanks would be a waste of time.
BTW the Brits used the Grant/Lee to great effect in Burma see "The Admin Box".