Map completion

Hey,

at this time, maps will be completed by killing the boss - favoring high single target damage. In past leagues it was kill all rares, whitch was good for AOE builds. Maybe there is a solution that does not favor any build style? Maybe an either/or condition or something like that. So it is your descision to skip loot, if your build is suitet better for one or the other. What are your thoughts on that?