#2 Bobby Lashley
Bobby Lashley was a huge name in WWE in the 2000s. He was Vince McMahon's chosen one and, was crowned with the United States Championship soon after his debut. He had a great run in ECW and, is a two-time ECW Champion. He was scheduled for a big push as the face of the company, but the lack of creative booking had him released in 2008.
Bobby Lashley is one of the most physically gifted wrestlers in the history of WWE. Built at 245 lbs, he is a perfect combination of strength and speed. He has drastically improved his in-ring work after spending years on the Independent Circuit.
Rumors have been flying around for weeks that Lashley's return to WWE is almost certain. If this happens, there are a plethora of options 'The Dominator' can work with.
Roman Reigns is expected to win the Universal Championship at WrestleMania 34. Imagine him boasting about his success on the Raw after Mania, and getting interrupted by the theme "Unstoppable". The WWE Universe would be absolutely ecstatic.