C is the answer I will go with because it opens up the poker market to two largely untapped resources, women and african-americans.
95% of poker players are white or asian men. If Tiffany were to win, you would see women and african-americans coming out of the woodwork to play the game and the poker boom would explode to unheard of heights.
Raymer winning twice in a row in fields of this size would be an absolutely unheard of accomplishment and would certainly keep poker's momentum going.
Ivey winning would validate that pros can win and it's not a complete crapshoot. It would prove skill plays a role and the top pros can win. It would also be personal vindication for him to get over the hump and win the main event.
All 3 of these would be good for poker and would continue to fuel the boom. I disagree that another no-name would benefit the community, as it would be a been here, done that sort of thing.