hazed-,
Nice list, couple of comments though.
The Matilda or Matilda II would be useless unless some German stuff that it could kill was added. Without that the Firefly is a much better, and easier, tank to add for the Brits. No, the Firefly isn't a perk, unless the Panzer IV H is a perk. They are pretty equivilent tanks.
The Panther V G is definately a perk. It is, all around, the best tank of WWII. Its armor is actually functionally thicker than the Tiger I's armor because of their respective slopes. The V G is also much faster, presents a low profile and has a gun that can kill all common Allied tanks at range.
I think the upper range of non-perk tanks would be the T-34/76 or T-34/85. The T-34/85 could also be the bottom rung of perk tanks.
[ 09-03-2001: Message edited by: Karnak ]