#4 Rusev (and Lana)

In my mind, the timeline of Rusev's WWE career can be split into two (unequal, I might add) parts.
Before John Cena. And after him.
Before facing John Cena for the first time, the undefeated Rusev was a whirlwind of rippling muscles, athleticism that belied his frame and a whole lot of momentum.
After losing to John Cena, he's been reduced to singing in backstage segments with Aiden English.
The Bulgarian Brute is such a gifted performer and he can totally hold his own on the microphone too. If booked properly, he could be to SmackDown Live what Samoa Joe is to Raw - a menacing big man who can match words and cross swords with the best of them.
But I guess it's too late for that now.
Perhaps, now, it's time for Rusev Day to take over Monday Night Raw. Oh, and he should totally take Lana with him too.