With all respects, the time is not enough at all for serious progress, considering that not all the guilds actually raiding in actual PvE Content, and trying to complete the mythic content are Professional Gamers. Not all players have enough time/skill for emulating pro-gamers in terms of progress at all.
Man, even the Alliance Hall of Fame isnt even completed still (Actually is at 96#, and the last one was completed nearly just hours ago).
This Tier, at least from my PoV, is mechanically quite more difficult than others, which is good in certain point, but its not something that only just taking away % of Boss HP, or damage you can just nerf properly as you could see just from charts and comments from people doing mythic content like in other Tiers.
This cant be serious.