Based on the feedback here on the forums its pretty clear there are two camps.
Very casual players who enjoy open world PvE for abnegation and Mechanist is excellent there. Its a really cool flavor, the mech looks slick as hell, the mech skills look nice and slick and its VERY easy to play. These are all totally valid opinions and I understand this outlook.
Enfranchised players who enjoy PvP, WvW or high end PvE. These players, myself included, looked at the reveal of Mechanist and already saw warning flags. After only a couple hours of playtime its clear the spec is broken for any of the content this group of players enjoys. This spec has less damage than our other specs, less utility than Scrapper in WvW or group PvE and less 'fun' for those of us who enjoy playing piano with our skills during gameplay. Again this is a totally valid opinion to have.
What I dont and can never understand is why the casual players fight so hard to keep the spec exactly the same and wont hear criticism about it. Like no matter what ANet does, the spec will remain the perfect, easy to play open world PvE pet class of your dreams. Stop poo-pooing on people who ALSO want it to be relevant to their interests too.