I love how they play in Yankee Stadium and San Francisco and now Miami. I think it's worse to play in an NFL stadium that seats 90K and you have 30K in the seats... that to me looks way worse. Mose baseball stadiums seat around 40K and if you get 30K in the seats it looks better and has a better feel to the game.
It's not the ideal surface but I think the experience and the feel of the game out weighs the cons.