Which is actually just boring in my opinion anyway, but even if you don't agree with that opinion, one fact is for certain. Monks are by far the most "generic" feeling class in the game. They don't feel like they have any cool tricks with them or very good skill synchronous. Their skills are there because they needed something to fill the roll of a tank/support/damage class.
So instead of making some rant about how the whole class should be changed because of points 1-50 i'm just going to make a rant on one aspect of the monk which is more... misleading, to say the least.
Change the "combo abilites" to actually combo together in a useful way. As it stands now you can transition one primary attack into another, as in you can make the first 2 attacks with Deadly Reach and then Crippling Wave will preform it's 3rd attack.
But there is no real benefit in doing so or reason to even consider doing so, mostly because all of the effects of the abilities and their runes are so lopsided. Most of the runes actually state that "the third strike" does something. So if all that matters is the 3rd strike then why even make them combos? Just make the 3rd attack the only attack and your basically getting just as much use out of it, as well as generating just as much spirit.
So there are two main ways i see to adjust this to make the experience more enjoyable, one less extreme than the other.
[the less extreme idea]
1) Make monks build additional spirit and/or deal more damage for combining primary abilities.
So basically make what i described in the italicized part beneficial and worth while doing through a simple numbers boost. Enough of one that would make you consider putting two primary abilities on your bars for another reason than the 3rd attack effect.
[more extreme idea]
2) Nearly complete REVAMP of the runes for primary attacks. Basically make them less lopsided as to give the player a reason to use alternating primary attacks.
There are a few examples of this now, but the system is still very lopsided. If you take FoT with Thunderclap, you get a small teleport on your first attack, which can be used to close distance in order to CW. That's probably the best example of what i mean in action that is already in the game.