I really hope that they change the way that they do Roamers. I did not like finding the legendary bird 12 or however times in XY just to battle it stationary. On the other hand, the traditional roaming didn't do it for me either... I think it would be cool if Latios and Latias would appear as a Horde Encounter and you have to faint one in order to pick which you want to catch. I liked the choice in Emerald because I like the combo of Latios and Kyogre.
I also disliked the type of roaming in X and Y. (I have yet to see Zapdos enough times. I just transferred one instead.)
The old method is alright I suppose. (Perhaps I am just used to it.)
I never have really been a fan of any type of roamers anyways, but I can deal with them continuing the roamers.