Windows are fine.
I more like the idea of nice bathrooms, great concession areas with room to eat, nice premium areas, wide concourses with a view of the game, comfortable seats with better leg room, escalators/elevators for ease of movement, places to meet and greet friends, a sound system where I can understand what is coming through the speakers, a nice new feel that will create some fun and maybe reinvigorate lots of people to buy season tickets and single game tickets, filling the place, built with acoustics that will be loud. You know, the stuff that a new place has given to many of our peers and people we're trying to beat.
But, if people are married to a building that was opened 95 years ago, hanging on to some "magic" that was there 30+ years ago and has clearly disappeared, then go for it. Power to you.