Hi,
With healers, i really hope they not will make priest just another druids.
I rather have that priests are needed and that druids are also needed.
It's just with current content 1 druid can solo heal most situations and have their de-buffing seeds to give additional support.
Priest have some nice damage mitigation skills (some druids too) but with most content those skills aren't really needed.
If casting speed buffs didn't exist, priest would be your number one choice for reactive (single target) healing... but that was 10 years ago.. 
imho it just would be great if priest have some more toolkit that was also really needed with the end game content.
Think of skills like damage mitigation for raid, damage immune for raid, stun immune for raid, fear immune for raid, awesome utilities like the dr/ch has.
Because what would be more great (regarding healers) then that we can keep both our druids and priest because they are required to do the latest content..?
ps. @Devs thanks for the awesome job you do at the balancing, we all know it's a long path with multiple iterations, but it's really cool to see you listen and interact with the feedback of the community.