The point of balancing is to make sure people of all levels and gears are able to play the game without needing to be geared to the extent of +20. Unless you actually wish for their to be content for +20, High honed, P2W/Rich/Veterans Users (In which, the majority would disagree), that doesn't seem to be the best example in determining what's really op and not.
Let me clarify a few things. (And ill just be throwing numbers here with the curve of this game)
What is OP:
(I'm going to use priest here since everyone is familiar with the class)
A & C have maxed the mentioned skill.
A has the LvL 45 set.
C has the LvL 70 Set.
Neither of them have any special enhancements such as elements, hones, seeds, refinement (+1~20) or even buffs. (Chef/Alch/Supportive Skill/Etc)
A uses Credo on the dummy in arena.
Credo strikes 13,000 per two seconds.
C also uses credo on a dummy.
Credo strikes 67,000 per Tic.
Both of these are not critical strikes.
What is wrong with this picture? The skill itself is over bearing in magic damage.
What is not op:
"A" strike's the dummy with Credo resulting 1,315 damage.
C strike's the dummy with Credo resulting 6,520 damage.
While C hulks a bunch of power with Credo only, "A" deals an acceptable (By the RO2 communities plea) ammount of damage.
Where is the in-balance in this? The gear itself.
Now let's see what happens when we nerf Credo [40% Deficiency] with this situation ^ present:
"A" strikes the dummy with Credo resulting 789 damage.
C strikes the dummy with Credo resulting 3912 damage.
A is now going to hopelessly cry his class is under powered and will persist in a buff. While C is agreeing with the end game gear he has, its balanced.
Now if +20 refinement was added into the problem. Both cases would be considered OP. (Post Nerf)
The problem is, not everyone is blessed enough to get full blown +20 gears. And a game shouldn't be shifted on refinement to the point where you can be soloing bosses as a Soul Maker. (The squishiest class in the game from what I've looked into) Or diving into fields where your class shouldn't be treading in heavily.
Mario: "Hey! Can I Join your Chaos party?"
XxSmexyStephxX: "Maybe! Whats your class?"
XxSmexyStephxX: "Can you DPS?"
Mario: "Yes! Not only do I have the damage potential to clear rooms by myself, I can also be your main and only healer!"
XxSmexyStephxX: "Okay your in!"
A knight can fit in this position to. ^ A class men't to control hate and damage can also dive out big numbers, [Really Well!] rivaling: Wizard/Assasin/Rogue. Now there are such thing as battle priests and knights in mmo's (Usually named Renegades) who just stick to pure dpsing. However, that would mean their support/tank potential falls off on the deep end. No way should a mmo introduce a mechanic to let a Tank take all the bosses in the game while also DPS'ing like a super saiyen, and allowing an main healing class dish out heal bombs to keep a party up while reaping the field like a nuclear warhead in three dimensions. D;
Or if you wanna hear the sad truth. (Again I'm using this class since everyone seems to be familiar with it)
LukaIsHawt: "Hey need someone to tank those 25 mobs for you in osiris?"
SugarMama: "Great! What's your class?"
SugarMama: "Okay let me tell party leader to send invite. =)"
Please guy's, after reading this. Do any of you still think it's a good idea to be messing with the Monks, Soulmakers, Priests, Sorcerer, Wizards, Rogues, Assasin, Knight, Warriors, Beastmaster, Crecentia and Rangers skill's right now? Do you guys honestly believe the way the equipment's are balanced now it's not the majority of the problem? Is this really not the bigger picture? Don't you guys wish to see one of your fun (If not favorite) game be much more enjoyable and have no class balance issues at all? Why do we need to cut the buds, instead of the roots of the problem? I cant fathom a community disregarding it's weaker/under-geared/unprivileged players. Why do they have to go through thousands of hell while we can live the easy life? It shouldn't be that way, even to work/build for it.
This is just my overall proposal for Every Ragnarok Online 2 Advent of Valkyrie Classes. Not just Priests and Sorcerers.