Echoing a sentiment from a thread on coh2.org, I think FRPs are the single dumbest idea Relic has had in this game. Not just in the fact that EFA doesn't have them, but in what they encourage from the WFA. Now it's certainly possible to blob without an FRP (For Mother Russia Blobs are terrifying) but universally I think everyone can agree it at least encourages it far far more.
US and OKW have been the most guilty of blobbing during their time in this game.. If the blob doesn't have to walk as far to travel the whole map, you are punished far less for not spreading your forces as you can mass-retreat and march again without having to start from the base-sector.
Given how important a component of the game the Retreat Mechanism is, FRPs are by far one of the largest balance concerns IMO. It completely devalues the act of forcing off infantry, and turns the "T" key into a brainless reset button. At the very least I think OKWs should come later than T1. Keep on the same building, just require the final tier to get it. Again, I'd rather all 5 factions have to fight without them than have them receive a nerf or be added to the EFA.
They are too cheap at 210 manpower and can quite regularly, as if shock troops, win engagements against mainline infantry by crossing ground to super close range. Coupled with flamers from the OP commander and or a bren gun + minesweeper it is not balanced.
Sturms by comparison are balanced in terms of price and reinforcement costs. Some would argue have too many roles.
Solution: Increase price or decrease dps (Or implement a 'burning of hands' mechanic from the stens poor design).