I don't know about any of the other epic spells, but is there any chance of getting the damage ramped up a bit for Dark Cyclone? The damage it does for an epic spell is pretty low considering a lot more damage can be done with multiple casts of Lightning Storm in the time it takes Dark Cyclone to recharge. I hardly use it on my Druid/Ranger, except as an afterthought, or for the "ooh" factor. It's low damage/long recharge almost makes it not worth the time and effort to get it.