1. I had to turn the music off. That constant chittery noise was making me NUTS! The music in the first game was great!
2. People STILL freezing the game indefinitely when they know they're going to lose, and just leaving, hoping you'll quit so they can get a cheezy win. SO LAME!!!!!! This was a brutal problem in the last game, and I can't believe they haven't sorted it. Totally unacceptable.
3. "Game is Synching" crap. Lag switching on purpose or not, to negate spells or combat effects. It's not hard to resolve actions even if the connection goes out for a sec... the mechanics and situation are the same as they were 2 seconds ago. Another thing they HAD to fix in this installment.
I didn't purchase the foil decks, but I think MS should explain what they do more thoroughly. 99% of people wouldn't buy them knowing they could unlock the cards for free by playing the game...