I couldn't disagree more, typically a well designed instance forces you to have to kill everyone prior to reaching the boss. In the current format, you're better off searching for random spawned chest which can be done without killing anyone or do this while killing all the foot soldier/minions and not the boss. Your long term gamers for this type of game are looking for challenging bosses and a percentage of a chance to be rewarded even if it's 1/100 for a rare item. Currently your going to obtain full legendary gear in PvP then in PvE by ten fold. However, we are still comparing based on the Beta so this could be scaled better in the final version.

that is a really good point!