It really depends on what you think would be "success" versus "fucked up". Even though I didn't particularly like the way it ended, Punk's 434-day reign as WWE Champion was a success in that it turned him from the second-highest babyface in the company when he captured the title to the most over heel in the company. I'm personally of the opinion that Cena should have finally won the belt from Punk in a turn-around from Punk's MITB win over him in 2011, but we were given "Twice in a Lifetime" instead. Having said that and given the results, I think it was a very successful storyline.
As for the Shield break-up angle, I think it's going very well right now, but the next shoe can't drop until the Wyatts win at EC. Also, the set-up of Wyatts vs. Cena looks promising so far. The Authority "Angle" has been very successful if the point of it was to build Daniel Bryan as the guy everybody wanted to see win the WWE Championship from the Authority's Champion, because that's what he is now, so much so, in fact, that a guy who should have been a big face coming back (Batista) gets booed when he's gift-wrapped the opportunity to take it away from Randy Orton (who everybody should be/is sick and tired of as Champion).
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