So, I just recently got back into raiding after a break for a tier, and I have come back to druids having an Attonment! Interesting idea, I kinda like it, but my biggest issue with it is the fact that, unlike Priests, we have no benefit to it critting. If a priest crits with Smite, they put up Diving Aegis on the target. I think it would be worth experimenting with if Blizzard made DoC Wrath crits apply Living Seed to the target.
Now, even with this, I doubt it would make it a competitive build, but it would be interesting for casual play. I wonder if/what changes could be made to maybe one day make it an actual decent healing setup for heroic raids, or whatever. I think for this to happen, something pretty crazy would have to happen, like DoC crits apply Living Seed and a Rejuv, or crits apply Living Seed and cast Wild Growth, without affecting the cooldown of Wild Growth. But, those would be pretty insane changes, and not worth the time and effort for competitive changes.
Just me messing around with ideas again :P