Very disappointing. It is one thing to have all the wings along the same difficulty or have them ramp up. To make the difficulty between the wings just take a nose dive to what is supposed to be the pinnacle of the story line just kills it. Such a disservice to the players to end the expansion like that. Edit: I did not mean to say it was so smooth rather the first two wings at launch was far more rough and kind of kills the feel. It is LFR after all where you just cant have a true boss by boss progression.
As others have pointed out, this might just be a day one thing like the revamped ZA back in Cata was for me where most of my groups went to three bosses within the time for the week or how PuGs cleared the first wing in ICC on day one and yet later groups struggled.
I came back to see the end and here it is so that plays a roll in killing the mood for me.