Bursts over 5 seconds should be extremely risky to the gun. Several such in a short time should disable it.
A solid burst beyond about 300 yards should be vanishingly unlikely. In fact it should really be beyond 100 yards, but...
The tracers should be much more subtle. Right now, I can see the tracers much before I can see the dots. WWI pilots consistently describe them as wisps.
We need a front over which to fly, and an airspace to defend. I just can't stomach the pointless suicide funnel furball anymore.