Pet spec is great in theory and I would be all for it if the pet AI had at least some semblance of competence. And don't even get me started on the pathing issues. In current state it's detrimental for the new spec design to rely on the pet so much. IMHO it could be circumvented (kinda) if the Mechanist played similarly to the Soulbeast but that's another can of worms.
I'm already resigned on not getting a fun new playstyle, maybe in two years when they redesign it like they did with Scrapper. Until then it's either the same kit piano playstyle with braindead pet or 11111 fest while trying to support your team with the braindead pet.
With that said nerfing the pet would be just another nail in the coffin. This spec needs redesign.