From Heavensward to Stormblood the chakra system did not evolve. They gave us two new ways to build chakra (good) but no new ways to spend it. In fact, they eliminated one of the uses of having 5 stacks, and nerfed the potency of the other skill. This barely increases the experience/fun playing Monk at 60 to 70. Square needs to realize that only being allowed to spend this resource when it is maxed is the least flexible of all of the job gauges in the game. It must be full to be used in anyway, and there's only one skill of interest at that point? This is a major flaw and suggests that either Square doesn't care about how this job is played or the guy who is designing gameplay around it is a bore. Riddle of Fire is not fun to use. It's a damage buff - yes,a large one, but nothing that puts us ahead of the pack - it simply keeps you in the game. From level 60-67 (before you get it) Monk easily falls to 3rd place or lower for DPS without it. Riddle of Earth is the dumbest thing ever. It requires two unavoidable hits in a row to get the damage reduction, and the GL3 refresh is subpar. Instead of a way to refresh/maintain GL3, how about a way to gain it quicker?

Tackle Mastery fml what is this? Do they realize they made Steel Peak a flat damage increase that should only ever be used immediately off cooldown?

This is what Monk's need to feel like things are fun post 60:
1) A way to spend chakra flexibly. Maybe a GL4 type buff can be unlocked after unleashing 5 chakra.
2) Choices that force us out of the 2.x rotation of DK->TS->Dem->BS->TrS->SP monotony
3) True North needs to come off of cooldown sooner so it's not nearly as annoying to keep up with positionals (something that has only gotten harder since 2.x) during certain fights. This skill is an annoying "must have" for a Monk cross-role action during some fights while still being annoying to decide when to use. For the fight where hitting positionals is a problem, we need this skill so often and for such small windows of time that the current cooldown/duration balance of it is just off. This skill as it stands now is more like a tease..."you need me so often but I'm probably on cooldown."
4) Perfect Balance needs to come off cooldown faster. 180 seconds is prohibitively long for a skill that still takes 5 GCDs on top of it before putting Monk in fighting shape. They noticed Benediction was too long but not this skill? Perhaps if they made whatever they were going for with Riddle of Earth sensible they could leave this cooldown alone. As it stands now, they failed.
5) Give us ways to spend a GL stack for situational DPS trade offs. There may be interesting choices on dropping a stack right before a coeurl GCD gets used which would allow us to earn it back immediately.
6) GL4 could be introduced as a very temporary buff state that also opens up tier 4 level combo actions (or maybe is only unlocked by certain actions) and ends up being something that cannot be maintained indefinitely. Integrate GL4 state with some existing skills to potentially have different effects under it. This could combine with #5 in that spending a single G4 stack that is going to be gone anyways is an optimal timing for when to spend the resource that is about to be capped.

Monks don't need to be DPS kings but they should be fun and rewarding to play. There should also be a reason raid groups want them in the party. Right now the only reason why Monks may be invited to the table is because we still do relevant DPS when played well, but no one cares about Mantra or Brotherhood. Ninja bring relevant DPS and more utility.