I want to centralize my monk suggestions in one post.
For my part, I don't want a buff of monk, but I want a little rework of some awkward skill we get in stormblood.

First Riddle of fire

Riddle of Fire is a good skill which helps and gives an insane burst to the monk during 20 second, but it feels pretty uncomfortable. It doesn't fit with class' use, so I suggest to replace it with an oGCD which gives Gl4 during 20 seconds to fit more with feeling with the class because when I play monk, I want to punch faster and not slower.

Tackle Mastery

Is basically a good idea which give fist stances more utility, but at the end, is just a trait that's gives 20 potency to shoulder tackle. So I would suggest a complete rework of the tackle mastery trait. It would gives 5% damage to all fist stances who work like the bard songs.