The Chronicles of Masteria Update

I'm wondering why Nexon isn't trying things from classic video games, they could easily work if programmed right... then again, this IS Nexon.
What I mean is such things as the boss appearing in random locations just to attack before disappearing again. It wouldn't need that much HP, because it would take a while to kill it even without lots of it. Give it some powerful (life threatening yet dodgeable) attacks, status afflictions like Seduce and the reverse control curse in Ariant PQ, and you have a recipe for an interesting boss, right?
Heck, make it fast-paced too so it's difficult to even get a hit in. To be fair, melee could tank the damage to put a hit in while ranged can hit when it's safe.
Feel free to give criticism, just pulling this out of thin air here. xD

ever heard of giest rog?