I gotta say, the biggest concern for me is their baked in DRM.
Each game will have to be activated online, and will then be tied to that console and account.
So...if you take your game to a friends you have to options:
1. Sign into your account
2. Friend pays full retail price to license the ability to play.
This came directly from MS in a Kotaku article.
http://kotaku.com/you-will-be-able-to-trade-xbox-one-games-online-micros-509140825
Also, I don't watch live TV, I watch hulu, netflix, twitch, youtube, teamcoco....Seems foolish to target live TV when the subscriptions are dropping every year. More and more people are "cutting the cord", why place your focus on that segment while screwing over your original demographic with this used games DRM?
Oh yeah, the Halo TV series, that's why. I couldn't care less about a TV show based on a video game. When 343 stepped on stage I was hopeful...but no game, just more TV.
Kinect though, right? Redeeming quality?
I'll reserve judgement on that until we have accurate reports of it's abilities.
Remember how awesome the Kinect seemed at first, then you realized it doesn't work half the time?
I realize that they warned this would have little to do with games and E3 will show their software titles in full, but man....The whole used games DRM is a deal breaker for me. I hope PS4 doesn't follow suit. It probably will though, if their patents point to anything it's that.