Imo it's fine as it is. Those mager campers dont need to be more op. They bind you, and then they hit constant 30+'s with Zuriel staff through mage pray, and now you want bind to work 100% of time? Too bad if you splash few times. If i use melee, i sometimes hit 0's too. See the similarity?
Zuriels max through prayer is around 30.
The chances of you splashing are big, I splashed 8times in a row on a full dh dude with maxed out magic set (used zuriels staff)
Just now I was fighting a guy with karils hood and skirts, black d hide body, he was anti mage praying I was anti range parying.
I had maxed out magic set(zuriels , mage t and all that crap).
My tb splashed 4times.
My zuriels staff splashed 6times in a row, after that I hit once and kept splashing again.
I am not sure but I think he did more dmg to me than I did dmg to him eventually.
Now tell me how can a 200m armour be worse than a 5m armour?