I think I am getting this

I share your pain regarding flawed kits. it is truly dissapointing to wait for a kit of something you desire and see it totally botched. We have seen Bob's (justified) anguish and we have seen many a Shermaholic vent his/her spleen over stupid errors by DML. If you haven't guessed by now that DML don't seem to care overly about non German stuff then I'd have to ask where you have been. The non German Suff gets updated but not to the same degree as the German stuff which still gets botched like our beloved subjects.
As for DML's new Engine deck hatches in the M4A2 line, yes they did redo them but it isn't a conspiracy against just the Russian fans , they didn't upgrade other M4A2's either including a US and Brit one. It's just that they upgrade as they go, sometimes they go back over older subjects but that tends to be the really older subjects regardless of subject. The Fact that DML are still making Shermans and for that matter T34's is that they are selling. The fact that they just piecemeal update does sho a lack of care but I think you nailed it earlier. The owner prefers German stuff and thats what gets the resources. The Shermans and T34's are stretched out using as much existing tooling as possible to maximise returns.
The fact that they don't have much competition in the T34 line (about to change) is also a reason for minimal effort like it was with the Shermans until Tasca decided to test the water and got them out to prove how good they were. I can tell you as a diehard Sherman fan that even when they are trying to compete with Tasca they still cut corners badly as is the case with the M4A2 DV.
Lets face it, whether it is a T34, Sherman , A 13, Matilda or Pz III we will get what the manufacturers give us, warts and all. By all means vent your spleen but please don't drag we modellers who don't happen to like T 34's in to this as the bad guys. Vent it at the manufacturers
Al