Weapons mechanics are out of whack (so to speak). There is an-unrealistic approach to caliber and damage/recoil. 7.62x51 should be more effective in semi-auto with a double tap mechanic. 7.62x39 should not be as controllable in full auto as it is. 5.56x45 should be quick rapid fire, but still be affected by recoil on full-auto. Bring back the old mechanics of the first insurgency, at least try to replicate them in this new engine. There is an intensity/immersion factor that is severely lacking from the first. I fear that the developeras are catering to the new players (CoD/battlefield fanboys) for more profits. Put simply... Why fix something that wasn't broken. Get back to old insurgency mechanics and keep the intensity/realism.
More tense fire-fights. Bring back old insurgency weapons mechanics.