Dude, Soviet mortars (hard counter for MGs and Paks) got nerfed to bat shit. How can you still complain about Guards mortar and T-34 call ins? The Stug with Pak walls is damn amazing. Without precision strike, Soviet mortars accuracy is garbage honestly.
Soviet Mortars are the most accurate in the game so I have no idea what your talking about. The only direct nerf that was given was the reduction to 80 damage for the 120 and it's still a beast.
Flares provide a shitload of synergy with infantry pushes.