Couple things I don't like about MWs...
Chi wave takes forever from range to reach the target, it has a stupidly low travel time which is incredibly frustrating. I love it when it does what it's supposed to and bounces like crazy, it's been my #1 heal at times, other times it's 90% of the time, non-existant. it somehow always manages to bounce off the tank it slowly travels to and goes to a mage way the hell away. I can't use it on a ranged, because it'll just be totally worthless. Why can't it fire like renewing mists, yeah, I love the look and how it changes colors, and flies through the air...I don't like it taking forever to do what it's supposed to before my target is dead or topped off.
I think Zen Sphere needs to function more like holy radiance, or a HoT that explodes. The fact it takes 4 chi to effectively AoE heal with it is really, really stupid.
I really dislike how renewing mists and uplift functions, I never seem to be in a situation where uplift can be used, unless I can perfectly time my thunderbrew tea when there's about to be big aoe damage on EVERYONE, otherwise it's like my renewing mists targets are never at low hp. Dropping the chi for mana is horrible as well.
We're also terrible tank healers, where all other healing classes can do it quite well for different reasons. I feel like we're not the masters of AoE or the masters of tank healing. Soothing mists isn't enough in a raid to heal, if you don't have 3 chi you can't use your burst whenever you choose, you can't use chi wave because your tank will be dead before it reaches them, and you'll be forced to oom yourself spamming surging mists. I don't think there's any excuse for us to have been made to not be able to effectively tank heal.
I enjoy melee healing, but sometimes chi seems like a horrible restriction for what the class could be doing.