OK so...
as is, this is looking pretty crazy.
MA starts at 1d6.
Goes to 1d10 at 6th, then 2d6 at 10th, with 3d6 at 17th.
So 3.5 > 5.5 > 7 > 10.5
I could maybe see an argument for 3.5 (1d6) > 4.5 (1d8) > 5.5 (1d10) > 6.5 (1d12), at 5th, 11th, 17th, but as-is is too much.
from 2nd level, it gets to make 3 attacks a turn + 1 other thing a combat.
By tier 2, you might as well not have the points.
You get to make 4 1d10 attacks at 6th level.
This scales to 5 3d6 attacks in tier 4.
You also buffed stunning strike, which is one of the most powerful features in the whole game, and a lot of why monks budget is so throttled.
And you can basically ignore curve alongside it.
And moved the 14th level feature to 7th.
There's more, but I'm kinda outta time/energy xD
As is, this monk is outperforming a tier 4 fighter, in tier 2.