Oh, it will be a little while before I even touch SB content. I'm still getting through HW. However, I think what I enjoyed the most about healing in HW was simply becoming a better healer. My healing in ARR and healing in HW are night and day. I was a more cautious, non-DPSing healer in ARR because I was always so afraid of wiping the party and getting yelled at. In HW something changed, and I became this ruthless, cleric stancing mad woman bent on destroying my opposition, but still having a great amount of motherly care for my comrades. It's probably why Assize continues to be my favorite ability in the whole game.

I also really enjoyed discovering how much WHM fits my playstyle, which also did not happen until HW.