What do you mean? Kübel is already CP 0, you can build it from the start. If you are worried about build time, just make it like medium callins are now, the unit is in tech structure with buildtime.
Oberkommando West is the only faction without nondoctrinal HMG. Choosing a diffrent doctrine than Luftwaffe or Fortifications leaves player without a HMG and mid-late game suppression unit. How often do you see Kübels in late game? Meanwhile Ostheer, USA, and Soviets can suppress with their machine guns OKW cant have a HMG at all.
My suggestion is, that Kübelwagen becomes a CP 0 unit to Luftwaffe and Fortifications doctrines. MG34 would be moved to HQ or Battlegroup Headquarters.
Relic has showed already, that they can rework existing doctrines, so why this wouldnt happen?
What are the benefits from this?
-More combined arms, which CoH2 is all about.
-Less elite infantry skilltrains of death. (Jägertrains, Panzerfusilier-officer trains)
-Better gameplay.
/EDIT Oops, the poll is wrong. If some moderator could fix the last option, "and move Kubel to commanders"