I guess we could add The Man of Steel to this list.
It had some ideas I liked. The Kents living to see Clark become Superman? Not bad. Lana Lang as Clark's confidant? Cool. Superman's costume being normal fabric that can be damaged? Why not? It makes for a good visual when he goes head-to-head with Darkseid and Brainiac. Luthor as a businessman? Well...it was interesting at first, but boy, did it wear out it's welcome after the first few years of the revamp. It's STILL boring as all get-out. No distinction between Clark and Superman? Bad move. Clark doesn't have to be a nerdy wimp (the Alyn and Reeves versions weren't), but there needs to be SOME difference in the two personas. The treatment of Krypton? HATE IT. Superman's rejection of Krypton and assertion that only his humanity matters? Equally bad. He's supposed to be SUPERMAN, not superMAN or SUPERman. Swinging to one side at the expense of the other has always been a major mistake made with the character. This story was hardly the end-all be-all of Superman that fans claim it is.
The "Vampire Batman" Elseworlds stories were cack, too. Bad writing, bad art, some needlessly gory moments...did this really need to be made into a trilogy? Wouldn't one book have been enough?
Kevin Smith's Spider-Man/Black Cat book is a major disappointment, too. What was the point of even doing the mini-series when he wasn't going to finish it? He just left us hanging with Black Cat drugged and on the verge of being raped. Would it really have killed him to finish the story instead of leaving it hanging on a distasteful note?
"Hush" is a loser, too. Jeph Loeb USED to be a good writer. Why is he just coasting now?
JLA: Earth 2 had a good premise, but its conclusion was really wimpy and half-baked. Would it have been such a problem to have the two teams go at it in a full-scale battle instead of dishing up a such a flaccid finale? And couldn't we have gotten a better artist than Frank "I make sure everyone looks like wrinkled parade balloons" Quitely?
Again, there's more, but I won't bore you with them.