I would love to see this system brought over to the SoundTails config area:

forestTail1 = define sound1;
forestTail2 = define sound2;
forestTail = (sound1,0.5,sound2,0.5)

It's basically the same as with the guns and "soundBegin", where you can define multiple sounds and then let the engine pick one.

Having this possibility would remove the flanging effect that happens when you fire a fast RPM weapon in full auto.