The real problem in the most recent expansions is that Heroic is far too easy, specially with all the Titanforge (and now Corrupted) stuff, and allows you to jump into Mythic far too early.
Think about it - Mythic just got out and you're already complaining it's too tight?
How loose should it be?
Want to beat bosses first week?
Expect to watch a video and beat the bosses or something?