Something new.? PVP?

Plus there is no variation in skill builds, everyone levels their character's SP the same and by level 180+ everyone has the same exact things maxed. For PVP this spells boring.

They could make a separate PVP skill book that you level up along side your normal grinding skills, and give it far less SP than normal so you'd actually have to choose between skills.
Still, direct PVP would suck in maple. Even if they got rid of the crippling lag, which isn't going to happen.

I'm pretty happy with the idea of competitive PQs, the likes of which I caught a glimpse of in that ghost ship PQ thingy. You have two instances of the PQ, and opposing teams race to finish it, maybe meeting up in the middle for a boss tug of war battle or something. That way you can tailor different parts of the PQ to be easier for a certain class or certain style of play (eh, meelee VS ranged, single target vs AOE etc) to keep every class reasonably wanted.