7. The Undertaker
(Spoiler alert) There is a fairly good chance that Undertaker will be facing Brock Lesnar at WrestleMania 30. But if he was to appear at the Elimation Chamber I wouldn't have him grandstand/challenge Brock, I would have him go against the Shield. Again, picture the scene. The Wyatt's have just beaten the Shield and Dean Ambrose is losing his cool with Reigns and Rollins, asking them why have they gone soft, etc., reminding them of all the people that they have destroyed in the last year (including the Undertaker). The crowd chant his name but Ambrose goes on talking, then the lights go out, the gong sounds and out he comes to confront them. They don't leave, as why would they be scared of him, but he cleans house on Ambrose and Rollins, getting his revenge, but seems to leave Reigns alone. This leads to Ambrose attempting to interfere in his match at 'Mania, which in turn leads to Reigns fighting off Ambrose and Rollins and standing beside Undertaker, effectively becoming the new Phenom. Now that would be an effective passing of the torch.......