Looks like some decent changes coming in the next hotfix for MW, including two focused on Soothing Mist talents this time:
I’ve honestly always skipped Peaceful Mending in caster builds, but I guess at some point they’re going to buff it to the point that it’s kind of impossible to ignore in a SooM build. Edit: not sure if I’d even take it now though since I’d have to either give up Sheilun or the Unison line. 
Maybe when they get to 100% I’ll give it a shot!