I talk about this a lot on other platforms but they always ask people to post to the forums so, here goes:

I love this MNK rework in 5.4, not because it's a perfect fix, but because it cut out what I think was really holding MNK back. GL is a great concept and I like the notion that we attack faster than most melee jobs. How we got there compared to other melee jobs like NIN and SAM (who got the increased speed and damage with far less effort) was tedious. Not difficult, nor interesting, but tedious.

GL and Chakra never complimented each other. There were GL-centered skills and abilities, and Chakra-centered skills and abilities, but they worked separately and never intersected. Now, with GL as a trait (where I believe it rightfully belongs), the devs can focus on focusing on a more cohesive kit centered around Chakra. I think it's a far more interesting and satisfying concept to explore and expand on.

There's plenty more I'd like to see (including a bit more complexity for sure), but I'm very optimistic about the new direction because of these point.