I can't remember this much mainstream coverage and positive reviews for anything they've done in a very, very long time. Even reviews from a couple of critics who aren't their biggest fans have been praising the performance, the songs, everything about it. Its even being discussed positively on totally random forums, again, by people who aren't fans of the band.
I can totally see why they've done it - they're the natural choice to understand how to get the best from the venue I think.
This isn't meant as a negative dig, but they'd be absolutely insane not to keep the momentum going into next year - whether its an extension to the residency or a new album and tour announcement.