I dunno, 6% passive Int and 25% stronger heals for the 45 secs it active makes HoTW pretty swanky - just picture using it in the last phase of Iron Qon or Lei Shen
Hmm something tells me they simply have the wording wrong. 40% reduced effectiveness does imply 60% each, giving 120% back to the raid - but that's just going to encourage druids to glyph and innervate each other like we used to do. I doubt they'll go back to that. More likely its a typo and they meant 40% effectiveness per person, total of 80%. But if not and it is the 60% each method - hooray for dual druid team innervating each other woot