I guess stamina support Wardens were using Nature's Grasp before the changes, but, for me, it was off my radar because it was a Magicka skill (I wish I wouldn't have overlooked this before). So, I tried it out on the PTS to see what it was like and I have to say, it kind of fixes almost everything that wasn't working for me when trying to heal on my stamina Warden. During dragon fights, I was having a blast shooting around from player to player hitting them with Nature's grasp and vigoring, mushrooming, and icing bodies as needed. The mobility combined with the single target nature of the skill suits this heal style perfectly. The problem of not being able to burst heal anyone from a distance was strugglesome before, so I'm glad to be reintroduced to this skill again; It's EXACTLY what I needed! Now it's even better for stam Wardens, seemingly healing for twice as much as before due to it scaling to our highest resources. Although, because it is still a magicka skill, I cannot cast it all the time, but I'm finding that it's fine for how much I actually need to cast it. It's just honestly a lot of fun.
Nature's Grasp aside, I also tried out the new Mend Wounds. I didn't really understand what the changes were from the PTS notes (I guess they were over my head a little). So, after testing it, it seems to no longer cost Magicka to cast! In fact it costs nothing at all to cast and gives magicka back on heavy attack/heal. I've wanted to use this skill on my Stamina Warden since the first time I tried it out and now I can and... it... is... awesome. It feels faster and punchier than before. I like that I can return Magicka back for more Nature Grasps/buffing. I like the range and the precision. I was having so much fun with it... that I put it to use on my Magicka support Necro and will try it out on my Sorc and Nightblade healers today because they also lack good single target healing (I hate the Sorc twilight pet requiring two bars to slot and how it's always off beating up mobs across the room from me, doing its own thing, and I hate constantly killing myself with Malevolent Offering on my Nightblade). So, anyways, yes. Maybe Mend wounds for all of thems as well.
I have to mention, though, there is one thing about Mend Wounds that is bothering me. I feel like the toggle should only work for the bar it's on. It's uncomfortable switching to my DPS bar and not being able to light attack weave. It's uncomfortable having to click off the toggle first in order to do so. I think Mend Wounds would feel much better if it could remain toggled on... on one bar, and when switching bars, it doesn't add the healing to the second bar; I should be able to light attack weave as normal. However, when switching back, the toggle should still remain on, so there is no reclicking the toggle just to shoot out heals again. This would feel much smoother to me: Heally light and heavy attacks on one bar, normal dpsing on the other. Hopefully that can be improved upon in the future.