G43 makes marskmans squads useless.
You could have them with actual sniper range but since the game doesnt revolve around mid-long range engagements i see them with less utility. It could prove to be an interesting addon but i see that role already being occupied.
I still think that the "best solution" is adding mp scout vehicles at T0.
Germans would have another opening (maybe PIO spam into T2) and Russians would have another unit to add into con spam. Might prove useful to soft harass mgs/mortars.
Anyway, this are just ideas for "mods". Everything said on the last days touch way too much deep core mechanics/balances things. It´s easier to add mid/late game units rather than T0 units, specially non doctrinal ones.
I think you're right ... Too deep of a mechanics change although its a good idea. Also I would love to have t0 scout vehicles back!!