If you're a student, the ROC section has really amplified the gameday experience. No blue hairs around you to tell you to sit down. Organized cheering. Incentive to get there early and the ability to stand with people that also want to stand and cheer. It is comparable in intensity to any student section out there with few exceptions. It is also one of the largest in the nation.
If you're a family man, there is no better place in the world to see a sports event with your family than LES (maybe the Marriott Center). Limited swearing, lots of kids around, no drinking, etc. There is no better place to bring your kids when it comes to spectator sports. Between Cosmo, popcorn popping, the cheerleaders and Cougarettes, Cougar Tails, and the game itself, you have sufficient distractions for your kids to enjoy themselves without killing each other.
If you're an old person, you have an entire side of the stadium dedicated to your needs. The screens are to your left and right and are large enough that you can distinguish colors through your cataracts, it's quiet enough that you can take a mid-afternoon or early-evening nap, and you'll never be forced to stand.
Tickets are cheap enough that with some planning, any Utah family can make it to a game or two every year.
Sure, it doesn't appeal to fans that want to get so drunk that they urinate or poop in public. It doesn't appeal to fans that go to games to see body parts exposed. True, they haven't decided yet to offer caffeinated products. And in a more serious note, while the BYU product on the field remains high, the opponent can sometimes be lackluster. But in almost every measurable way, I can't think of a better place from childhood to retirement that I'd rather sit and watch a football game. It still caters to my evolving tastes as I age.
And because it is broadly appealing, you won't find a consistent application of "game atmosphere" that solely applies to your current desires for the product. You'll always find something to complain about that doesn't appeal to you, but you'll also find that what you most look for in a college football experience is still there.