I liked the commentaries by Ashley and Shahade very much. I think they found the right mixture of explaining the positions in general terms and of concrete analysis. They worked together as a team very well, and it being 12 games every round there was always enough to discuss. Definitely one of the most entertaining chess commentary I've ever listened to.
At the beginning I was not so sure about the format, but I think it worked out reasonably well. I had thought that 7 rounds may be too few rounds to produce four clear "winners", but with only 24 players it might just be enough. However, imagine there were only 3 players tied with several behind competing for he fourth spot, you have a lot of tie-breaking to do, something which should be avoided imo.
And sorry, but in spite of what just was posted by curtains
but I think the tie-breaking procedure used to find a winner has a major flaw: I just don't like that someone can be winning the title by reaching a draw. Sure, it was an exciting game, but Kamsky still only drew, and nevertheless he wins the title.
I liked the procedure they used in the World Cup much better: first four rapid games, and then pairs of blitz games until there is a clear winner. That can of course be modified, but the main idea (pairs of games until there is a clear winner) is just more logical and it avoids this artificial tradeoff between thinking time, colour and draw-odds. And in the end, the winner has actually defeated the runner-up.