Very slow org regain isn't particularly realistic though. And 100% GDE just means that you take less casualties, it has very little to do with breaking through enemy lines etc. Successful breakthrough and exploitation statistics would be org (for continuing to advance without having to stop and regroup), land speed (for obvious reasons) and soft/hard attack (to quickly dispose of things in your way), supply modifiers (though historically a weakness), and combat events. GDE does none of this directly. Division and doctrinal stats due virtually nothing at a strategic level except for movement speed and HQ supply efficiency.
Also, I really hate the idea that the Soviets have a "manpower doctrine" which wasn't their doctrine at all. This can/should IMO be simulated through events that nerf movement speed, org, morale, leader efficiency, and just having less capable leaders due to the purge. I've advocated this previously but since my tech mods are mostly for Kaiserreich which lacks purge events and the exact weaknesses inherent in the Soviet army faced in 1941.
Also, I really hate the idea that the Soviets have a "manpower doctrine" which wasn't their doctrine at all. This can/should IMO be simulated through events that nerf movement speed, org, morale, leader efficiency, and just having less capable leaders due to the purge. I've advocated this previously but since my tech mods are mostly for Kaiserreich which lacks purge events and the exact weaknesses inherent in the Soviet army faced in 1941.