#1 Sting
With the Boneyard match going down as a hit amongst the fans, WWE may have discovered to deliver on a feud that several people had been waiting on for a long time. Sting vs. The Undertaker has been the rounds for more than 20 years.
The two should have wrestled years ago, but things never quite panned out. With Sting retired from active competition, he can't compete in a ring or take bumps like he used to. But the cinematic nature of the match allows for it to happen.
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Imagine Sting not donning the makeup but being Steve Borden and Undertaker just calling him out of retirement to take his one last ride. In this case, one final match that will stand the test of time. Wrestling fans would go giddy at the sheer mention of the idea.
Sting could have a stuntman to take the more severe bumps if required, and a smart cinematographer and action director could be brought in. There are several ways to get around the physical limitations of both men. Perhaps, it's just a fantasy match at this point but never say never in professional wrestling.