I now have had my Xbox One since it's release. Over all I am enjoying it, the games look great, and it's working well. I like the voice commands to control game, apps and my television viewing.
That being said there are a few things from the 360 that I miss, and I can not understand why they didn't carry over to the One.
Voice Mail: Several times while playing BF4, I have tried to send a quick message to someone who isn't using game chat(in a party). To try and send a message when you can, while dead, to get to where you can send a message....type it out..then navigate back usually ends up with me getting disconnected. It's even a hassle to just send a message to offline friends. Why is there no voice mail for the one?
Recently met players: Was always nice to meet someone you liked while playing a game, then send them friend request. Be it immeditly or a few hours later. now it's difficult to do so, if at all.
Joining friends: Used to be able to just pick a friend off your list , then have an option to join them. Can't do that any longer. Can only be done if the game supports it.