To be able to take FRPs out, you need to start thinking of field reinforcement options for those factions. EFA are not exactly helpless on this, as they have their non-doc halftracks. OST can also build command bunkers.
Halftrack reinforcing does require micro, but it pays dividents for it, as you can reinforce also on enemy sectors.
For USF we can probably add a speed governors upgrade (that requires tech, though) to the ambulance to make it move faster, and maybe even allow reinforcing to work outside friendly territory.
For UKF, we can always make their M5 available non-doc, and tie Vickers/PIAT dropping to the doctrine.
The big question is what happens for OKW. While I Know that T1 & T4 is cancer to take out, the faction itself lacks the tools. We can't add 251, because OKW lacks the skins for it. IRHT should probably not be available non-doc.
- Should we allow walking stuka to reinforce on-the-field?
- Should we lift the restriction on MedHQ to allow them to be built elswhere too? (but made both weaker and cheaper)?
If OKW is to be the aggressive faction they need some way to maintain field presence. FRP are a low-micro brute-force of achieving this. Being able to only reinforce near fixed locations is an enormous disadvantage.
I know that OKW behaves more than turtle-incarnate faction rather than an aggressive faction. However, this can change if they no longer trivially-win the lategame.
whaaat? not everybody needs their own version of M3 or ambulance.... ambo is completely fine even if FRPs goes away and brit will always have a soft retreat base for 250mp so they are fine - actually fits with their theme just fine.
only real problem would be okw since as you say they are aggro faction. i thought of doubling health for the med base and discounts after you lose it but making it redployable sounds good too.