@rdk1
The problem with the Staff Evy, that I've found so far, is that we have too many spells already. We're constantly switching things out (or at least I am) so we can adjust to the situation, no other class has that problem. It gets in the way of raids, for when you might need a party feather.. but you have no room for it because you need other spells/skills as well. The Staffy aren't going to get a damage boost, they're just going to switch around a few things and add in things that we've already been promised (like ice bolt).
And also the problem is, just as you said. People aren't patient enough to stick through the class. Which makes Staffy's few and there's really no incentive to play it. That's probably why Mabinogi Heroes is updating the Staffy's. Don't forget that this is a new game, the classes are bound to be changed a few times.