I'd say it's only good news, the current problem for multiboxing is trying to do too many movement roles at once for this meta. Wizard needs to run ahead, monk needs to catch up asap and freeze and then pull correctly while the barb has to run around like a headless chicken gathering mobs. You just cannot do all of that as a single player. If they remove the pulling parts which they seem intent on doing then the gap to a real team will get a lot smaller.