I'm really hesitant about the X and Y anime, I severely disliked Max in Hoenn, and Bonnie just seems like she will be as annoying, if not worse. I'm glad that Cilan is finally gone, but will miss iris, hopefully she'll turn up at some point with a haxorus, rather than just with kibago still.
You'll actually miss Iris? She was pretty much the worst handled female lead of the entire series and she barely went through any character development. Outside of some unique backstory with the dragon stuff, she was pretty dull and forgettable. Cilan on the other hand was not only a great character himself, but he made up for how utterly terrible Brock's character was in Sinnoh, who most of us wanted gone from the show for years. There's a reason why Iris was the least popular female lead to date, while on the other hand Cilan was more popular than post-Johto Brock and Tracey.
4-person groups have been better than the majority of trio's we've had in the series, the writers are obviously remembering what people liked about the Hoenn group a decade ago by going back to a similar set-up. I don't know if I'll like Serena or not yet, but so far things are looking good.