I'm all for change, currently there's nothing making me want to get a next-gen console (I like the look of the division, I thought the other characters were NPCs, and if you get a group of friends going and it's like that then it would be ace), but everything that peaks my interest is stuff like I've just said, it's all online anyway. Why bother upgrading your console if it doesn't really do anything better? I have a PC so the graphics are fine for me, 360 will suffice - but I'm vary aware the online could be so much better.
Take defiance, it's a wonky game as has been said, but on next gen with the cloud? I could see games like that being great, no need for constant updates, it plays smoothly and looks great to boot (all mmos suffer graphically, not even 360 quality in defiance, but the game is very good so you forgive it, with next gen, you get that and better graphics helping the immersion).
But graphics aren't everything, and that's where the stories come in, with online games, they are so much more fun - take left for dead, you're not actually getting a story, but between your friends you're having a laugh, you're trying to help Sid out because Plasma and Yokel have run to tha choppa! without him. It's these unique stories that help make games that much more entertaining. I was very much against MMOs, then I had some fun on guild wars and defiance, I saw the benefits of L4D2 being only a MP game. If you're making the stories out of how your playing, it's that much more personal. There's still room for the single player game, but next gen to me is embracing something I never thought I'd think I wanted, online worlds.
I don't even have a good internet, but I'd get one just for it.
...and if you tell that to the kids of today, they wont believe you!