I love the idea of randomised CW infantry teams, you might end up with Highlanders or the Welsh Guards.
I don't know how much military history you're into, but if you read up on Monte Cassino and the Italian campaign you'll see Alexander's army was one of the most polyglot in history. Free French with the foreign legion and North African levies (camels!), Brits, Aussies, Kiwis, Brazilians (seriously), Americans and of course the Poles who led the final assault on Cassino.
A whole North Africa into Italy campaign would be brilliant, from the Afrika Korps to the Green Devils in Cassino and the bitter fighting on the Gothic Line, Screaming Eagles at Anzio, the Royal Marines fighting in Commachio...
YES!!! YES!!! YES!!! Certainly the randomized infantry teams, no question on that! They can function the same, or different, I dont know much about balancing that or care, it isnt important but I want the different skins and accents at the very least! That feeling of true variety.
I know a fair bit and you are totally right. I must admit I was thinking much more about the whole desert back and fourth saga from the 40's to 42 ish. I said Italy as sort of something to finish it off, another stage in a long war I suppose.
Lets remember the desert, no actually the whole war in the Med. It starts with the infantry battles Italy vs UK turning into Italy vs Commonwealth and eventually Axis vs Commonwealth or Axis vs Allies when both the Germans and US come in to bail each side out. A very progressive set of battles which a lot of emphasis on Supply and logistics, both across the sea and by land. The war here also extends to Greece at once point, and Crete, and to some extent Malta too. All of this was fought by British forces which in the end relied so heavily upon the other nations of the commonwealth to come to their aid, no matter how hard they put up a fight.
Lots to think about but I just really want them to stay away from what they did to the British in vCoH with the whole Caen conundrum. Any army in that situation would have resorted to defensive based offence tactics because of the situation. It helped to create the Falaise pocket which was really a strategic master mind. And whilst we are on vCoH we all know that the Brits are seen as the blob/ spam faction, which was not intentional i believe.