Bring back c4 for the class so support can actually do something against vehicles
Increase revive incentives. Award substantially more XP for revives, revive chains, and keeping teammates alive so playing the objective is more rewarding than farming kills.
Buff suppression. Make suppression meaningfully reduce enemy accuracy or increase weapon sway so LMGs have a distinct battlefield role beyond just having large magazines.
Llaew - Axis defense
Do not walk my MG line twice.