I think a vehicle pack of early war stuff would be a good seller. It has been mentioned that BF might not want to double sell stuff that would be in later modules/games but at the rate we are going the early war Russian Front is 5 years away and probably in CM3, I don't think it will cause a sales problem.
We would need a couple of early T-34s, KV-I, KV-II, a couple of BTs, A couple of PzKpfw IIIs, the early PzKpfw IV , and the early STuG - maybe 10 in all. Half of these models are already complete in later versions. Of course this work would have to be squeezed in around a lot of other stuff but it would make ME so happy...