If you haven't seen T0oky's feedback threads on the official Class Feedback forums:
EU: https://eu.battle.net/forums/en/wow/topic/17615053813
US: https://us.battle.net/forums/en/wow/topic/20753406564
Please read and post your feedback, whether you agree or disagree with his specific suggestions. Keep the threads active and in the developers' eyes. There's been quite a bit of attention paid to numerous other healers' issues while we just kind of sit in the corner quietly. Like, why exactly aren't Phyrix and Almaiesh getting any changes in 7.2 when they're overhauling so many legendaries??
Edit: Aaaaaaaaaaaand... Cosmic Ripple just got the shit nerfed out of it. But hey, that *chance* to reset the cooldown of DP, amirite?