I would say that this is a very wrong choice to make from blizz because buffing up something that is so no brainer as 3 min CD and after 45 sec u will have -16% dmg because there will be no more hit combo if u take xuen. For me it is fail. First of all Hit Combo talent is a joke because it is like mastery, in tier set we will get again something like flat +dmg from mastery as a hit combo... looks like blizz loves the idea about mastery so they put it in everything about monk
not so creative in my opinion.
I'n my opinion WW is ok from gameplay perspective - can be challenging to master it - the problem is just how it scales with a gear and Storm Earth and Fire. So most of the time just dmg% problems. I'm not fun of Xuen buff coz it is 3 min CD, if that would be *3 buff but with 1min30sec CD it would be better in my opinion. Monks are already good in burst/AoE dmg - we need more single/consist dmg.