I'd love to see some branched combos on healers.
Things like dps spell 1-> dps spell 2 -> choice between heal finisher and dps finisher.
If you use the heal finisher, you get some small, short-time buff to your dps. Not strong enough you want to keep it up at all times but a nice little bonus for ending a dps combo with a heal finisher. The dps finisher on the other could give you a small bonus for heal.
Or something like an aoe dot you can consume for instant heal. Targeted, so you can target someone and every mob gets the dot removed and the target is healed. Okayish baseline healing but the bonus for each consumed dot makes it strong. It would be a fairly strong single target heal but it's not something you'd do everytime as you lose 1 gcd for reapplying the aoe dot.
Trade-offs. I love trade-offs, it makes a class much more interesting to play.
And risks.
Cleric stance was overly clunky but I did like the risk it involved. If you didn't pay attention to damage patterns, you risked getting the non-existent heals at a really bad time. The 5% buff they changed it into was just another mindless button and I'm glad it's gone.
Healers can contribute so much dps in this game compared to games like Tera or even early WoW, why not own it and make dpsing and healing synergise with each other? It doesn't even has to be taken to the extreme in form of a leech healer, just something that makes dpsing feels more like a meaningful choice and part of your kit instead of it feeling like a filler - a filler you spent most of your time on.
Something that makes you focus more on which dps buttons you push and gives you the ability to sacrifice dps for heal if you are in a pinch or shit hits the fan.
I enjoy having plenty of heal buttons but many of them are just way to close to one another and it feels more like same skill, different name instead of different skill, different choice.