Personally when I started learning about the new specialisation system in MoP, one of my first thoughts at having Rain of Fire in Affliction was, "Wtf?" It seems so much like an afterthought thrown in to compensate the Aff-build for the lack of a proper aoe.
I'd love to see something new and exciting replace it entirely. At first I was excited by Harvest Life but aside from some PVE grinding situations, have decided that it's pretty bloody useless. Rain of Fire has its place, I'm not arguing that, I'm just thinking that as fire it's just not in the theme of the build and that I'd really like to see something different, but just as effective.
How about you? Do you like fire in your shadow or do you dislike the concept and incorporation of it into affliction as much as I do?