I've always been a bit back and forth on this one.

Under normal circumstances it is a very tricky and difficult thing to pull off with deliberate precision but... ahem...automation tools can actually trigger best option attacks under certain proc conditions(so that you don't waste it on something like a light attack and only when certain other buffs are up) making it a very effective one-shot tool with very little brain power.

Rather than nerf it, I'd rather it provide a visual cue to those around and maybe give a slight delay to the damage boost so that the cue actually has time to register on other people's clients. At least then there would be the potential of taking defensive actions or avoiding procing it when possible.