#1. Bray Wyatt

After he will challenge Seth Rollins for the Universal Championship one more time in Saudi Arabia on October 31st, Bray Wyatt (and, we assume, The Fiend) will become a full-time member of the Friday Night SmackDown roster.
One would expect that The Fiend would be the most formidable challenger for Lesnar's WWE Championship. With the news that FOX was very keen on getting Wyatt on their show on Friday nights, it's evident that they think of him as a big Superstar. Does that mean that he is being primed to be the face of the Friday night brand?
If so, it could mean that Wyatt may get fast-tracked to the top of the card -- and seated at the top of the card is Brock Lesnar. The Fiend vs. Lesnar is surely a dream match and will make for the main event in any arena.
No matter what transpired at Hell in a Cell, or the fact that the Firefly Fun House may have been burned to the ground, Bray Wyatt is still a man that the fans are intrigued to see, and many people would be keen on seeing Wyatt take on Brock Lesnar. That would be two of the biggest forces of evil butting heads, and it could be one of the most unique matches in WWE history.