Druids are hardly "fire and forget". You've gotta be aware of how many seconds are left on your hots to maximize healing and not waste a stack of LB. You've gotta be aware of your swiftmend CDs. For best results glyph Lifebloom (for extra second) and Swiftmend (Don't consume Rj/Rg on use). You can swiftmend twice on a single Rejuv using this method.

Druid healing is not OP anymore, not like people think it is that remember druids facerolling through S1-S3. You've gotta keep LBx3 + Rejuv on a tank to keep the same healing the old style LBx3 did. Druids are not a bad choice at all. But don't know that I'd run 2. The downside to druid healing is it isn't practical for us to spam big heals. Most druids don't even HAVE healing touch on their action bars. We can pump out the big heals, Regrowths and nourish on top of Rg, Rj, LB, but you're going to have insane over healing with 2.