Okay so you know that the crystals up to the first boss buff your defenses to the point where Glass Cannons become Stone Walls. As a result a common use of these is to mass pull all the mobs as far as possible and AoE Them down as fast as possible, protected by the buff.

Now I want to know if this is an exploit or not. Did SE forsee that players woulbe be able to burn down almost every mob leading to the first boss within minuetes, as opposed to within minutes of each other group?