Ultimately however the problem we are trying to solve is that Wrath and Starfire are just too similar. In PvP you get a little bit of interest out of the fact that they are in different schools, but in PvE by the time talents are factored in, the two spells just become fairly quick (but not instant) nukes and it’s easy to math out which one to use and which one to ignore.
You know, I felt there was a pretty good distinction between the two brewing in BC. There were elementals that couldn't be hurt by Nature, and you had to go to Arcane. The gear was also occasionally geared (no pun intended) to one or the other.
Why not bring back a little of the "of Nature's Wrath" and "Arcane spellpower" (iirc)? Removing the spell type specific bonuses was an oversimplification that caused the nondifferentiation we're seeing in the interview, above.