Imo, there's a lot of things wrong with MCH now.
The lack of complexity and depth, our signature skill(Wildfire) being outclassed by Drill and Air Anchor, and the loss of Midfires in our rotation which I really personally enjoyed and is extremely satisfying to pull off.
They honestly didn't put any effort in the MCH redesign in my opinion. What they did to MCH is pretty much them removing DWT, Bahamuth, Aetherflow and Phoenix from SMN and just replaced them with one button for AkhMorn, one button for Deathflare and one button for Revelation, and then called it a day.
I really don't like the trend of simplifying jobs that they're doing, but the way they did MCH is just ridiculous. They turned it from the highest skill floor job, to literally the easiest job in the game.
Another thing that I have issues with is Queen. It looks cool, it looks hype, but damn is it buggy as hell. Queen can't switch targets in E6S, Queen can kill your doll in TEA for no reason, and Queen can literally glitch out in Uplift, and by the nature of it being melee, if it does glitch for 1.5 seconds, that's you losing out on potency just because of the AI in this game.
And this is my criticism for the role in general but where the hell is our utility? We had this identity of being more of a "Utility DPS" with Palisade, Refresh and what content can we use Leg Graze, Arm Graze and Head Graze on? I was looking forward to actually using Leg Graze on E8S adds but WHOOPS SORRY IT'S IMMUNE LOOOOL.
SE literally just turned us all into a 1% Party buff and called it a day. GIVE ME BACK MY DISMANTLE and my VULN UPs.
I've played 5.0 MCH for about a year now. I gave it an honest shot, and I tried to like it. There are things that I love about it, like how satisfying RA+ Drill is and all that, but it doesn't outweigh my criticisms on the job and the role in general. I just wish that they'll fix the job and the role in the future.
Until then, I'm playing Shadow Priest.