The idea that USF need a long range infatry from start to beat Ostheer is flawed and it would creates more issues that it would solve.
No, they dont need them to beat Ostheer. Its one of the excuses made that Path are needed because rifles cant do shit.
Main problem with USF, especially in teamgames is that maps are either very tightly packed making flanks really hard or way too exposed. Rifles really do struggle on such maps, because you usually cant flank or get into mid range without taking additional damage.
Such unit should not be insta pick to beat long range axis inf, but rather simular to an ass.grens, in other words unit which you pick if you understand that on particular match up\map rifles wont really cut it.
Again, no illusions here. People abuse paths not because reason X, but because paths and airborne commander is just very strong. But USF in teamgames indeed does have problems with long range combat, its just used as an excuse to defend soyfinders meta.
Soviet do not have such an infatry and they do just fine.
To be fair here, even if we ignore all the possible openings and support units soviet can have based on the map\opponents, cons at very least can use stock sprint which helps them either close the gap\soft retreat\flank.