Don't get me wrong, World's End isn't a bad film, it's brilliantly filmed, well acted and funny in places, it's just you get a sense of deja vu watching it.
I know a lot of Wright and Pegg's work has revolved around comedic homage to other popular culture references but they are ripping them selves off dreadfully here. The central premise is lifted straight from Sean of The Dead only with robots instead of zombies, the subtext is lifted straight from Hot Fuzz (strange underground movement trying to retain the niceness of an otherwise arse end of nowhere location using somewhat unpleasant means) and the unnecessarily gratuitous swearing is lifted straight out of Paul. Even Pegg's character is a less likeable version of Tim Bisley from Spaced. Possibly, after 15 years, it's just run it's course. Sean Of The Dead and Hot Fuzz set the bar incredibly high but transparently rehashing old ideas does smack of a creative block.
I'd hate to think that with Pegg getting increasingly bigger parts elsewhere, he's losing interest in his own work.