#4 Finn Balor
It is clear that WWE does not know where to go with Balor. After becoming the first ever Universal Champion, Balor's career has never really soared to such heights again. He's always been a man in the upper mid card, but without direction, without purpose, without a real program, ever since he made his return from injury. Balor may be best served by replacing Reigns as the third member of The Shield when the time comes.
Everyone expects Balor to form 'The Club' with Finn Balor and Anderson, but if this swerve were to happen, it would set the WWE Universe on fire. Balor would not look out of place, entering the arena from the crowd with Ambrose and Rollins, and his deficiencies on the microphone could be covered by these two veterans. When you think about it, this idea does make total sense.