Regen is already better than empowered healing. A regenerate serious spell for a 10th level druid restores 60 HP, while the equivalent spell for a cleric (on fourth level, cure critical) maxes at 42, unless you're healing domain--in which case it can hit 58. You're getting to essentially maximize + empower your spell for free in exchange for it taking a while. Clerics get regen spells a level later, druids get cure spells a level later, but they both get all the spells eventually.
That being said, I'd encourage a look at the wiki and some math to figure out what spells are capable of, since we're getting a little off topic.