At least that ending isn't the real ending anymore. If anything that's the best thing about the show being renewed, they have time to reflect and get better.

Also, if this episode was aired 2 years ago under Harmon people wouldn't be finding half the problems with it they are now and you know it.

If you keep weighing up this show with older seasons you're never going to enjoy it so why bother watching?

Forgetting Sarah Marshall and The Muppets were really well written so although the books will be a huge success no matter what happens, they'll probably be pretty good too.