Personally I would like Life Cocoon to actually function as a tank cooldown; right now, the HoT increase on it may as well not even exist with how quickly the shield gets consumed, and if I wanted just a big shield on a 2 minute cooldown it would be nice if it was more than 25% of a tank's health when compared to something like Lay on Hands or Divine Spirit. Also, I find Revival to be a rather awkward cooldown. It's very good when some kind of dispel is required or when the raid is taking damage to most members at once, but it's rather terrible when only half of your raid is at half health and the other is at full but the heal still diminishes over all 25 targets. It would be nice if Zen Meditation could function as a raid-wide damage reduction, as I feel that the tradeoff between channeling (such that you can't heal) and standing and healing can bring up some interesting gameplay that things like Barrier just don't have. Of course there would have to be more nerfs to make these things work, but I'd rather not be the healer that just brings big numbers and little else, it was quite boring on my Shaman.