>>707580>Evangelion Rebuilds>Mirai Nikki>Gundam SEED DestinyIf you're curious, OP, these are just disappointing/meh, not awful, and all have their fans, if you go in hoping for absolute dogshit, you'll be as disappointed as if you were expecting something good. There are way worse series, namely those which leave you asking "what was the fucking point of any of that?"; things completely devoid of entertainment value on top of being stupid.
Don't remember it too well, but fractale comes to mind
Honestly, if you pick any "literally who" anime from the early/mid-2000s you're likely to have that experience, too. A lot of stuff was kind of experimental in it's presentation, sometimes in an attempt to capture a vibe or something, in ways that meant it was either going to be a masterpiece or painful to finish.
Wish I could get more specific, but I've been a mangafag for years.