It is a tough gig, this year lots of bands/artists turned it down because of problems they had with the NFL.
So, you over the years, Super Bowl has had a lot of former greats who are over the hill, e.g., Bruce, Madonna, Petty, the Who - joke was made when they played a few years ago, that they would have been GREAT at Super Bowl III
Or rappers who appeal to a rather limited fanbase, but important demographic for the younger audience the NFL wants to appeal to
Or teeny boppers (Katy Perry!!!)
Country is out of place at halftime
Frankly, I agree with gamecockcat - just run out a great marching band, yesterday maybe a choir from one of the many historic churches in Atlanta to give it a local flavor, and then kickoff the 2nd half. It is really over the top and way more than we need