Blizzard said that they wanted the legendary rewards to be available to everyone early on in the patch so that they actually use them during progression, not as some afterthought. I personally dislike challenge modes since I didn't like the heroic dungeons; it was bad enough having to do the minor amount of pvp for the 5.1 stuff but you really want to force people to do content they don't want to do for a reward just to feel special and hardcore? You're like the 2200 rating heroes that took offense to how conquest gear acquisition was changing despite that the overwhelming majority of top arena/rbg players lauded the change.