The only Rappers that have the discography to hold down the SB are Jay, Kanye & Eminem
1.The only way Eminem would do it, is if the SB is in Detroit and that ain't happening PLUS Marshall is soooo lazy and idk if he's in to production of an actual event like this. His ratings would be huge though because he never tours and rarely performs
2.Kanye is too big of a liability right now
So Jay is pretty much the safe bet if it comes down to a rapper headlining it.
But I would rather see P!nk do it next year.
Rih still has time. I give it 4-5 years.