Soviets have their own crew repair commander
However the Soviets have to stop doing anything for 15 seconds whereas American crew can hop in at the first sign of trouble and repair the critical instantly. I believe that M4A3E2 Jumbo will do fine.
Didn't Relic said USF will be about mobility and speed so the Jumbo is quite mobile and personally I don't want to see anymore COH1 stuff in the game. CoH2 should only take the ones that are really good and maintain some authenticity in the game or else it ain't a WW2 game right? The USF in the game is supposed to be late 44 to early 45, right? It should mean the m26 was barely used.