Quote:
Waveform is not that great: the difference in damage is negligeable.
With a full HE build my turret deals 130.741 per bullet, with Waveform the average damage rises to 130.761 (123876 at 0 stacks, 137646 at 10 stacks).
My WF is missing 1.5 skill damage, though, so let's be generous and say it averages 131.000.
That damage is not evenly distributed, though, and you might find yourself with the buff on the skill that does not need it or, even worse, that's in cooldown.
To have an actual advantage from WF, compared to a fixed 20% skill damage from HE gear, too many things need to go right at the same moment, so I don't use it.