So after playing several hours with this doctrine, I thought about some fancy stuff, and how I would change this doctrine. I read several comments about this doctrine which points out some of the abilities are nearly useless, so I tried to change them with something new.
1 CP: MG-34 Heavy Machine Gun team: It reamins the same, at 1 CP you can call in a MG-34 squad.
3 CP: Fallschirmjäger: Same here, you can spawn a FSJ squad for 440MP at a ambient building.
Here comes the cool stuff:
7 CP: Flakpanzer Coelian: A Flakpaner Coelian with it's twin 37 mm auto-cannon can be deployed to the battlefield. This unit has immense damage against infantry.

10 CP: ME-262 Strafing run: A ME-262 A-1/U4 Pulkzerstörer jet-fighter will do a strafing run, damaging all units in it's path with it's powerful 50mm Mk.214a cannon.

12 CP: ME-262 Strafing Support: Two ME-262 A-1a jet-fighter target the designated area with their powerful 30mm cannons and rockets.

Let me know what do you think about it!