Lightwell is still viable in high level M+.
The rank 2 Holy Priest has pretty much exclusively been using it. It’s a decent safety net in spread fights once you’re at the point where everyone’s getting smacked pretty hard.
Divine Word is just much more flexible situation to situation. Being able to dump it on damage in easy pulls does speed the group up. And both sanc and serenity are decent bonuses at other times.
Lol, I remember when they first were making that change to nerf healers by increasing health pools a ton and bringing healing down.
I’d said then that it wouldn’t change anything unless they stopped concentrating all the biggest healing moments into raid-wide bursts that smack a healthbar. It’s fine to say ‘now damage won’t be as bursty, because the HP has changed and healers can heal less, so we can design the fights to not instantly kill you!’ but there’s never been follow-through on that. They said that and then the very same raid they were talking about gave us Rashok. The issue is damage patterns/fight design in raids, and it always has been.
I think they found a type of fight design people like, where it’s about executing movement and exterior mechanics properly to avoid death - then creating giant raid-wide hit moments that healers plan their CDs for. It basically focuses every healer into covering those moments specifically and rotating their raid-wide CDs (or any AoE they have) and everyone just snipes each other.
And, to be fair, overhealing will increase with gear completely regardless of what Blizzard decides to do, because gear score has to improve healing. The more healing a group can do the less healers a group should need. This has been a thing for a long time in WoW, though. It’s the eternal problem of ‘well we don’t need 4 healers for this, but if we bench a healer they’re not gonna want to come back.’
And, y’know, sometimes damage patterns are so spikey you do need that 4th healer to provide another raid CD or mitigation, even if they’re doing nothing else.
They can continue to nerf healers, or increase max HP all they want, but until something changes at the fight design level, OR they just change damage profiles a lot it won’t really mean anything, IMO. Also any nerfs they do to healers in raids absolutely destroys M+, unfortunately. We saw that in DF S1 where dungeons had to get nerfed a boatload for people to start clearing higher keys and a mass exodus of healers in the M+ scene, as well as healer-less comps lol.