It has to be Hioki, he has a big following amongst hardcores and he opened plenty of eyes after that win over Bart.
I'm guessing some combination of Shogun/Machida/Davis/Bader will be the co-main event, maybe even all four of them will end up on this card. Fitch/Shields should be on this too.
THE PERFECT STORM
THE PERFECT RECORD
THE PERFECT FIGHTER