It looks nice, and I'm a Yankees fan, but it's an antiquated park that needs to be replaced.
Add Wrigley to that list. I went many times in the 90's ...lived 4 blocks a way..and as beautiful as it looked, you can tell Father Time has not be very good to the stadium. The outside may look nice, but the inside is old.
Maybe also,besides Fenway & Wrigley being old,the average fan is a lot larger(read wider,although taller could also be an issue) now. I wonder how much the seating capacity would diminish if they widened the seats for obese fans?