Then, Blizzard introduced a staff-only enchant [http://www.wowhead.com/item=45059] that was better, and that leveled the playing field somewhat.
In Cataclysm, there is no staff-only enchant. And, to make matters worse, there is now an off-hand enchant that gives 100 intellect.
Does this mean that staves will once again be sub-par for healers? It seems like a shame. Or, is Blizzard doing something to address this?