Like I mentioned in the Pokemon Direct thread, revealing the logos would have had more impact if they weren't leaked yesterday. No one would have expected Sun and Moon instead of Z or Rainbow. I'm sure that they didn't want the logos to get out before the announcement, which Nintendo really has to work on preventing in the future.
Anyway, I could see this generation being closely related to the sixth generation given the whole Zygarde forms and the lack of a traditional continuation of Kalos through sequels or a third version. It would be a good way to provide some good post-storyline content if we got to go through Kalos again. I just hope that it won't result in either region suffering, but since they took a year off to I assume work more on S/M for the anniversary, I'm hoping that they'll be able to handle that concept more effectively.
I'd really like a region based on Ireland. The scenery would be so beautiful and being Irish myself, an Ireland region would be really neat. I have heard speculation on a Greece region based on the names, which would also be cool.
One of my biggest hopes for the games is that they bring back Contests, or at least have some kind of sidequest that could work as an on-going goal for the female lead in the anime. This is mainly due to how I miss Contests in the anime more than in the games. I did like playing them again in OR/AS and collecting ribbons was fun, but I really don't want to deal with anything like Showcases again. Showcases in XY are pretty to look at, but that's about it. They're boring as dirt and watching Showcases just remind me how much I miss them in the anime. If they can't be Contests, then something that could be a decent sidequest in the game and a good goal in the anime would work too.
I do hope that we get more new Pokemon in S/M than we didn in X/Y. If the designs are as good as they were in X/Y, that would help balance out the fewer amount, but I'd still like to see something at least closer to one hundred new Pokemon. As for Mega Pokemon, I want a Mega Flygon so badly. Mega Arcanine would also be neat.
I really hope that the rivals and storyline will be an improvement over X/Y. While I did enjoy X/Y, the characters and storyline felt lacking. The rivals were all so bland, Team Flare was uninteresting until their climax, which was too little, too late for me, and Malva not being more involved in the main storyline was such a huge wasted opportunity. I'd really like see Malva involved in a new evil team, especially when I was hoping for a continuation of X/Y to flesh that detail out some more, and rivals who are more along the lines of what the fifth generation provided. They had much more interesting personalities, development and good pay off to their storylines. The fifth generation had some of the best rival characters in the franchise, so something more along those lines would be nice.
As for the evil team, I really hope that they aren't so easy. I'm fine with grunts having no more than two or three Pokemon, but Admins should have at least four Pokemon. You usually face them fairly late into the storyline, so you should be more than ready to face four Pokemon from one trainer. I have a lot of hope for these games, but I'm sure the long wait will be worthwhile.