Though HT is gonna hit for more, I am using Regrowth a fair bit on my clearcasts simply because it's a full 0.9s faster. If it'll get the job done I can get back to Nourishing almost a second earlier, which lets me hold off on HT that much more. Of course it blows when it doesn't crit - that's a risk I take, but if the speed at the time is warranted, I'll do it. If I specced Moonglow and ditched Nature's Bounty, yeah, I wouldn't really being casting it either. Right now, I feel what I gain from Regrowth's crit outweighs moonglow's mana reduction in terms of my overall usefulness to a group - not having the option to really buffer people back with Regrowths while I'm lifebloom rolling in tree form because Regrowth will never crit, well, currently not an option I like. If I need Moonglow badly when I step into raids, so be it, but while specced for Regrowth, it's not *as bad* a button as everyone is making it out to be, not that I'm happy where it is myself. It's poor. Its crit dependency is a relic that we don't need anymore. They phased it out somewhat in WotLK and shifted it to Nourish, then only brought it back when Efflo was tied to it. Buff the spell, kill the crit. Heaven forbid a non-resto druid casts it.
A clearcast regrowth (that will likely crit) to swiftmend a melee that needs some oomph makes it worth it in my eyes, though, especially if others will benefit from Efflo (not that I'm a big fan of Efflo's throughput) and that melee is under fire enough to proc the living seed in the next 15 seconds.
Edited by Nilianil on 12/12/2010 2:37 PM PST