Longtime lurker...
I agree with Spades - great game, a few little quirks to take care of.
The Friends list bug is very annoying. I also wish the friends list was available from the lobby without going through other menus.
I'd like to see something along the lines of X killed Y in-game so you know when your teammates are taking a dirt nap. It is hard to concentrate when you are constantly asking if anyone else is still alive.
The co-op modes are excellent and will keep this game in my Xbox for a long time to come.