And people also hated the fact that you could buy veterancy in that doctrine
Being able to buy Veterancy was something they should have kept but made a default part of the faction design and not part of a DLC commander
Unique veterancy for each faction (not just OKW) would have been a nice feature.
They were originally trying to go with that at one point. Soviets used to gain more veterancy from units lost or damage taken (so imagine a T-34 getting hit with an Elephant just to gain 1 star of veterancy)
You would retreat and come back stronger like
"Comrade I have returned with greater power let us resume our battle"