I could see aoe/single target specialist classes causing issues for players in the aoe/non-aoe content depending on which direction future content goes. Since this is NOT FFXI, and has a finite amount of slots for spells (that already takes a painfully long time to reassign unless you use macros, which should not be required of the average player just to switch classes) I'm against the idea of separating single target/AoE anything. I'm for the idea of an AoE widget though, doesn't have to be huge, just something you can click or select between spells that isn't as intrusive as it is now.