Or at least remove the pull. Buff the damage, I don't care. But remove the pull.
There's nothing inherently wrong with the pull, but when you combine it with laggy servers, it's devastating. Console lag is way worse than PC lag (if you can imagine that.)
I don't know about other servers, but on PS EU, everyone and their mother is using it in battlegrounds and Cyrodiil. It was fun in the beginning, but it isn't fun anymore.
We had a way to deal with zergs and ball groups. It was called bombing, and it worked great (until proxy detonation got over-tuned, but that's fixed now.) That was before you decided to completely ruin Mechanical Acuity for everyone. You could have changed it so that only AoE's had a guaranteed crit for 5 seconds. Even if you left it the way it was, the short TTK wasn't because the set was too powerful. It was because of people running around with 20k health and no resistances. Players who know what they're doing in PvP don't really have a problem dealing with gankers or jabplars.
Please revisit this set and your recent changes.