The only problem I have with this show is that the creators just love to the aggravate the fans to the tenth degree. We waited four long years for Luke and Lorelai to finally get together, only for Christopher to be thrown back into the picture in the previous season. This time, it's Luke's long lost daughter, April. Why a love child in Gilmore Girls, I'll never understand. So, of course, problems arise for our OTP.
Speaking of OTPs, the whole rift between Rory and Lorelai never quite worked for me. It's ten or so episodes of pure wanting them to reconcile, rather than being able to enjoy the rest of the episode.
On a positive, look out for some fantastic DAR moments, purely for some wonderful scenes with the older Gilmores and seeing Rory back to her old, lovely self. Also, some wonderful moments between Luke and Lorelai, and other hilarious anecdotes from the other characters of Stars Hollow. You can tell the moment the writers decided the whole Rory leaving Yale and hating her mother storyline wasn't working out for anyone, and the season dramatically improves from then on out.
I have mixed feelings about this season. It's still brilliantly written and deserves a lot more credit than it is given, but don't expect quite the calibre of the previous seasons, particularly seasons 1-4.