2nd idea:What if you could upgrade German tanks to have the ability to lock down (yes i know that has been suggested on another thread, but this is different) However, while they are in lockdown ability they act kinda like the PE Scout Car in the sense that the enemy cant capture the base while it is in lockdown. also, this tank can call in artillery strikes, and increase line of site. It may even have the ability to call in pioneers, or automatically repair vehicles around it. It may sound overpowered, but maybe you could set a limit on how many you could upgrade.
Global experience - the point is that all units experience gained is counted together in one building and then redistributed to individual units as medals, giving this unit some benefits. F.e.:Prestige center (100 MP, 10 Fuel)Prestige center serves as gathering point for experience. Units doesn't become veterans by experience, instead all experienced is counted inside this building and can be checked every time clicking on it. For those experience points medals can be granted to particular units, making it then more valuable in combat:20exp Iron Cross 1st class50exp German Cross90exp Knight's CrossEach medal is then displayed with unit's banner similar to PE def/off veterancy. Each unit can receive only 1 individual medal, it doesn't have to have lower medals to receive bigger one. So it is possible to distribute a Knight's cross to a unit without any medal. Effect of medals are cumulative, higher medal has bigger impact. Medals could also grant some special ability.
In other words, the Ostheer would be a bit like an elephant: large and powerful, but very clumsy and slow.
I'm staying here and i'm reading and i really need to say what i need to say1. the ostheer was a multinational army not a german one2. the action of the game is happening somewhere in 44 so we need to see what countries were fighting against USSR in that time alongside Germany, and these contries were mainly Romania, Hungary, Finland, and some divisions of Slovakia and Croatia3. these contries were never fighting together(Romania and Hungary were practically in war one with the other)so in my opinion Ostheer need to have a german tech tree and the three doctrines should represent the contribution of the mainly allies in that time romania, hungary an finland
The longer they fight and kill, the more weapons and skills they gather. High vet soldiers should have good anti-infantry and anti-tank weapons with sprint ability to boot.