I like to think they're on to something with Sage. It has an ability to heal AS it does damage, and several options to DPS with, but no real rotation of sorts, so it's easy to stop DPS to focus on heals when needed. It's also fairly streamlined.

I would like to see a lot less abilities on, say, WHM, and just combine same-similar abilities. Like I'd drop Benediction (full HP) and just turn it into 2 charges of Tetraggamuffin, for a total of 3 or whatever charges you can spam if needed.

Also, I'd get rid of Cure 3 entirely, and just get rid of Cure 1 (and have it turn into Cure 2 when that level is hit).