Since Ostruppen are now on a cooldown to spawn and have suffered various nerfs in the early game, I say let them have normal capping speed. They don't need to be slowed down further when they're already being limited so much in their spawns.
Also, Ostruppen with the MG42's appear to not be doing much more with the upgrade and this could be worked around if the upgrade was bumped from 45 muni to 60 muni, but gave a slight cover bonus accuracy. (Not nearly as much as they got before, but it would make sense given the doctrines reliance on cover) Also the idea that you need to wait until T4 in my opinion is far too late for Ostruppen to scale effectively. They are a doctrine-specific infantry unit that you are banking your survivability on so they should be getting MG's at T3 instead of T4. It's kind of silly that you can get a Panzer IV before you can get an MG42 in your Ostruppen squads. I'd say Ostruppen being restricted from getting a 2nd weapon in the squad is enough of a reason to account for this change. It's just a 6 man infantry squad that is meant to trade effectively behind cover and that's it. They're the worst infantry unit in the game if they're not behind cover. By the late game they lose all of this to Allied factions having double-LMG's on practically every squad.
So overall I am proposing this:
Because of these changes:
Conclusion: Ostruppen doctrine used to win games by rushing important green cover points and overwhelming the Allied players until the Axis player could get an early Panzer IV and seal the game. With the recent changes in the DBP, the doctrine lost one of its major strengths which was "zerg rushing" so now something must be done to give Ostruppen doctrine strength throughout a match. I'm open to other people's suggestions and opinions. All of this is based on just my own testing with the DBP V2.0.