#4 Kurt Angle

For months, a bout between Kurt Angle and Triple H had been rumoured to take place at WrestleMania, with the end of Survivor Series looking to be the moment that established their rivalry.
However, things have gone quiet since then and it now looks as though Kurt is without a dancing partner in New Orleans. Having a look at the current roster, it is difficult to choose an opponent for Kurt, especially with Samoa Joe injured and Jason Jordan tied up with Seth Rollins. A feud between Braun and Kurt could work, especially considering Braun's behaviour on recent episodes of Raw but it's unlikely that the company would want to give Kurt such a physically demanding match.
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The best option then could be Kurt teaming up with Rousey to take on Triple H and Stephanie. Kurt already has ample reason to pursue the duo and offering his services to Rousey so she will sign with Raw, would be a nice touch.
Rousey is also a life-long wrestling fan and having her interact with such a legend of the industry might be a nice way to endear her to the WWE universe.