I dislike tokens because its an additional case of bookkeeping that turns encounters too much into calculating the math to "play the game".
There's some unease about Expertise dice, but I can live with those because they are reset after every round.

I want combat not to be about out-calculating the opposition, but more about out-narrating them. Writing down damage taken and crossing out expended spells is the maximum of bookkeeping that should occure during encounters. The use of dice and and bookkeeping should be as low as possible to dertermine the outcome of the players descisions. When you start fighting math with math, that's not a game I want to play, and my main problem with 3rd Edition.