I don't understand why permenant debuffing is in the game, I don't think it fits well with the style of the game, it promotes boring and frustrating combat.
I suggest we change debuffs, to take away the permenant aspect of them. Instead, debuffs remove a set of buffs, let's say like 4-5 for so many seconds, say 7 seconds.
A long time to be without your buffs, still a good way of bringing down a specific target. To balance it though, a long cooldown, so that certain mages/kngihts focus isn't just 'debuff machine'.
As it stands, you get debuffed a few times, and you're almost certainly dead, or because buffs are so powerful, you're essentially useless in the fight from then on, it's not as annoying now that buffsets aren't neccesary, but it's still a bad mechanic.