I think I remember reading somewhere that during Stalingrad at least, it was common to go into combat with one 71 round drum mag in your PPsH with and carry stick mags. The logic being you have more ammo before your first reload, you could carry more magazines, and the drum mag(like most drum mags) wasn't nearly as reliable as the stick magazine. Just a tidbit of info I thought I would throw out there.
And I remember reading articles about how on the defense squads were trained to operate around their mg42 like football players operate around their quarterback. And I am pretty sure I also read something about two man mg42 teams that would be used to clear buildings by spraying through the walls and floors as they passed through.
DSHK would be incredible overkill. It's basically a russian M2.
People would be crying that it shoots through walls and two men beyond that.
While the idea seems a good one, the whole 'wheel carriage' thing may prove too complex; I'm also not sure I'd trust about 90% of the players I've seen ingame with a wheeled anything, much less a DShK on a carriage, and at the end of the day I don't think it would really add a whole lot to the game. The MG42, on the other hand, would be interesting to see, along with an infantry-adapted DT-28 for the Soviets (a common modification).Well, they had it, so why not add it? Ofcourse you could at the same time add a light German FlaK piece to even things up a bit, as long as both weapons behave as they should.
Also keep in mind that the DSHK is an extremely heavy weapon, and needs to be rolled around on a wheel carriage, presenting quite a target, esp. for a well placed grenade.