OK, so Daltrey and Townshend aren't as good as they once were. No surprise at 65, right? I think it's inherently much more fun (and interesting) to have some rock-n-roll icons from the past put on a little show at halftime (if for now other reason than to see what they've still got) than it would be to put some currently popular act on for a 12 min
PR stunt. If you want to see some pop-culture bimbo strut her stuff, buy an overpriced concert ticket and get 2 hours worth of it in the company of a bunch of 12 year olds.
(I admit I'd be hard-pressed to apply this analysis to the Stones performance at the SB a couple of years back... Now that
was interesting, but granted a bit hard to take.
)