It's insane that you're typing this with a straight face, as if having access to whatever "several mechanics" was granted for each and every player and all of their characters. Getting reservations requires leading a whole raid yourself or being well connected with the raid leader for them to let you. Being "the next one in line" requires being a long-term member of an established guild who's capable of clearing the content and values you over other members. Buying stuff in the auction house takes out of the equation anything bind on pick up.
But hey, I'd be all for Blackrock players to have to form guilds of at least 40 visibly and undeniably active players (no alts, naturally), who have been part of the guild for a few weeks, who won't be able to join another one for a few weeks of cooldown if they leave, who have to have completed the weekly quest(s) to be eligible, and who all share a single "chest per boss per week" and have to roll or agree on who will get the next one.