Not necessarily because of the extra exposure, but for BYU to win a lot of games next year, they will need key guys to step up.
If guys coming off injuries are rated conservatively, they're going to rise pretty quickly in the rankings if they remain healthy (most players have to remain healthy their senior year to be drafted).
Barring injury (you can't predict injury), Taysom, Jamaal, Bronson, Mathews, and possibly an OL get drafted next year. They're NFL talent, no question.
If he's not injured this year, Taysom will be in New York for the Heisman ceremony. Others (Mathews) will benefit from Taysom's talent.