Hard for me to say because I'm not all that sure I'm playing it correctly. There are times where I feel like I'm doing everything right and the damage still feels underwhelming. There are things I like about the job for sure but the whole proc based combo with terrible RNG bothers me. Having to constantly replace my robot buddy because they can't move despite being able to fly. The heavy and snare feel incredibly situational, same with the 100 potency knock back that people flip their shit (rightly so most of the time) when you use it.
I still enjoy it in a way and will at the very least revisit it later if I choose not to level it right now. I don't want to write it off because I could simply be bad at it. Ultimately I'm not happy with it right now and it certainly wasn't what I expected.
I agree with a lot of what this guy had to say about it.
https://www.reddit.com/r/ffxiv/comments/3asv0s/my_feelings_on_machinist/?