The basic design philosophy behind the MG34 and carried on w the MG42 (rather lightweight, universal, converted from light MG into a "heavy" one by using tripod mount w sights, leveling and auto fire / advance mechanisms etcetc) was due to the doctrine the Wehrmacht employed on account of lessons learned from WW1 namely: the MG is the KEY player, NOT the RIFLE nor SMG!
The RIFLES in a german MG Trupp / Zug were there to merely support the MG by hauling AMMO to the MG and protecting it when leap frogging to the next position. For THAT you need to use a Machine Gun which can be hauled around EASILY, by ONE man as well as FIRED easily, again, by ONE man and not just from the "Hi, im nailed to the ground" position else the whole concept doesnt work really.
The allied philosophy was the opposite - the MG chills in the back while the rifles move up - the MG then fires from its Chill Out position towards anything the squad leader advancing w the rifles / recon troops tells it to.
So, when you throw around "Squad Support Weapon" in conjunction w the MG34 - bear this in mind:
Wehrmacht: THE MG34 WAS THE "SQUAD" ! The RIFLES were the "Support" weapons!
Allies: RIFLES were the "Squad", the MG was the SUPPORT weapon.
What does that have to do w the MG34 again, in case you can not follow?
To employ the doctrine and tactics as outlined rather broadly above the MG34 had to be designed and thus WAS designed to be handled AND FIRED / CONTROLLED easily by the average soldier in any position as the situation dictates, that includes standing and advancing ie walking while firing !
As to the sniper grief - depending on barrel wear and if outfitted w the proper sight ie on tripod w sights and due to the fact the MG34 came factory equipped w a dual-trigger (upper single, lower Field Broom (auto)) firing the same rounds used in sniper rifles (7.92x57) --- whats your point? Sure, you could snipe with it if you had nothing else / were bored / drunk enough...etetc, why not?
If possible for real why not in game? Just be glad we dont get the tripod mount w the sights and all that....