#3 Kurt Angle

WWE hasn't trotted Kurt Angle out to compete too much over the course of his latest run with the company and that might be what makes his every appearance so special to watch. In fact, between filling in for Roman Reigns in The Shield last year, teaming with Rousey at Mania and going one on one with Drew Mcintyre, he has been beyond impactful.
With that being said however and father time being a cruel bastard, Angle's not going to last in this role forever and much like The Undertaker, will have to come to gripes with his limitations. Unfortunately for The WWE Universe, that means saying goodbye to one of the best Superstars to ever lace up the boots.
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Think about it! While Kurt Angle might be able to have two or three more impactful matches that really move the narrative forward positively for other superstars, there is going to come a time when it starts to not have the same effect. Furthermore, with Kurt Angles immense accolades and money, there isn't even really a reason for him to step in the ring anymore.