Apples and Oranges. So many people can dispel that it would be very rare these days that a Feral dispel is needed. Since other specs don't have to shift to dispel it just doesn't make much sense to have them do it. Feint is a 80% personal damage reduction with no cooldown and Cloak is a 100% damage reduction on a 1 minute cooldown. Ferals only 1 minute cooldown is barkskin which pales in comparison. Also being able to remove undispelable debuffs is incredibly powerful in heroics. Symbiosis would be nice if it wasn't so badly designed. The class has to be in your party AND not targeted by another Symbiosis. If you have a Druid healer he will be getting the defensive cooldown, not the Feral. Glyph of catform has the same limitation as Tranquility, you can't heal dead people.