Hi,
Its great mod, not only for DH, but general for the HoI series, and I know its JUST a game (and old) and this is mod created by two people (latest versions), but I have a few thoughts:
the new manpower system sounds nice, HoI games has a problem with ahistorical spam of units and for this reason perhaps with population losses. The reduction of this should be good. Hence reading to me that someone in the start of barbarossa has 0 human strength in the pool is also anti-realistic project, it sounds like "uber-volkssturm doctrine" in 1941.
Is it possible and is it good to... block modernization for most troops? PZ IV F1 could modernize to PZ IV F2 but can not in Panther. Could the bf109d upgrade to the bf 109e? But well... Its make a total new gameplay i think (no spamming of production asap).
Maybe that event exist, but Germany had Panzerfaust, so can the militia and the light infranty get an event in which they get for example +1 hard attack?