My idea of a good halftime show is a marching band playing John Phillips Sousa tunes, traditional American anthems, and maybe the Colonel Bogey March. A pox on the pop culture garbage.
That said, the NFL is right to hold the line, because they don’t want to set a precedent. Anything they do for TS they will be asked to do by other performers. It would be a mistake to open that door.
When they have marching bands the TV cuts away to talk. Drum Corps International Champions would make for a good show. I cannot even think of a popular artist to recommend. Maybe Tower of Power.