[Draenin]

If the system you're thinking of is really inspired by fiaryland, Stefan, I don't think It'd be wise to adopt it. Graal has a great battle system already, (Which is half the reason why quite a few people play, including myself) and implementing a new one would sort of take away from the feel of the classic battle system. Since G3d is still in development, I would recommend using it on that instead. Especially since there's gonna be a lot of lag due to the models needed for the game, and so on. GK really doesn't need it, as everyone's been doing just fine without it. New monsters (or the ones that were originally intended to be on GK) would be the best way to step in the right direction for GK along with some exp. changes for monsters.