What I like is that they've increased torque effects during takeoff. If you jam the throttle to full military power from a standstill, not even full rudder input will keep you straight. You now have to slowly increase throttle as you pick up speed, which is much more realistic, and feels better.
I agree with Kweassa that small-calibre tracers shouldn't have much of a visible spiral, just a more smoky effect. Cannon tracers did have a visible spiral, but AH2 doesn't have them quite right yet. Il-2 did it well by creating a dispersion effect for the tracers where the smoke would expand and dissipate with time, so it looks like a real smoke trail. AH2's tracers look like long ribbons of swirling newspaper.