OK here are my thoughts from what I've seen total.
Ryse: Son of Rome - Let me first start off by saying the game sincerely looks incredible and the slow-mo animations look sublime. The majority of previews that I've seen since E3 have said roughly the same thing, which is that the combat is great but can be too forgiving. Basically what that means is I'll be playing on a harder difficulty then normal. Overall Ryse is looking to be a very solid game.
Forza 5 - I think this is the best looking Xbox One game as of yet, the visuals are incredibly detailed and overall I would classify the game as pure car porn. Two things that kind of got me though are that there are only 200+ cars which really isn't a lot, I would have prefered closer to 400 cars but I can still work with 200ish. I'm hoping the fewer cars means more tracks. Secondly, the driveatar thing doesn't sound so good to me because you'll potentially have a good number of matches with terrible, agressive drivers. Hopefully people will be able to rate other people's driveatars and you'll be able to pick more professional-like drivers. Despite these things (and the other things that I've said was kind of disappointing about the game) this game is a 100% day one buy for me. I think it will be the best launch game.
D4 - Well I'm not really sold on the game yet but I do applaude the developers for making a Kinect game that actually is pretty compelling. Story looks decent (and quite awesomely crazy) and there are certainly some problems but most of those should be taken away at launch. Visually the game isn't anything amazing but the artstyle is pretty good.
Powerstar Golf - This game really surprised me not only because it's a X1 exclusive (which I didn't know) but also because it looks surprisingly fun. I love the colorful Pixar like graphic artstyle that it has. If this ends up being $15-30 I might actually get it on launch.
Peggle 2 - Looks decent, but not really my type of game. If it ever goes on sale for a few dollars I'd pick it up.
Dead Rising 3 - I never was able to get into the series much and this one doesn't excite me all that much either. It does look technically impressive though. I'll probably get it when it becomes a budget title.
Crimson Dragon - I really have nothing to say about this game other than meh, not interested in it at all.
Killer Instinct - Well I'm not a fan of fighting games at all but since the first character is free I'll give it a try. Who knows, maybe I'll end up liking it.
Zoo Tycoon - So I've only seen one video for this game (but in my defense it was a really long video) and the game looks like absolute fun. If fun and relaxing had a baby, it would most likely be this game. Graphics are also awesome. Definitely looks like gaming nirvana material to me.