5. Sting
While Sting will be taking part in this years WrestleMania festivities when hes inducted as the main attraction at this year's Hall of Fame ceremony, there is no doubt in my mind that Sting would be wrestling at the biggest stage of them all if it wasnt for the fact he suffered a career-ending neck injury in September. As a part-timer, Sting really doesnt effect the short-term WWE product as over the past year or so hes come and gone as he pleases. And, unlike everyone else on this list, his not wrestling at this years WrestleMania will not effect the long-term future of the company. Sting, unfortunately, had the distinction of being the one person on this list whose injury cements his legacy rather than dictates his future. After a long time being the last WCW holdout, Sting finally signed with WWE and made his wrestling debut at last years 'Mania, where he controversially lost to Triple H. And thats it -the one WrestleMania Sting will ever wrestle at, his debut for WWE no less, was a loss to Triple H after a messy round of nostalgia-fuelled interferences from D-X and the nWo. Stings injury, which was sustained during his second singles match for WWE, a loss against WWE champion Seth Rollins at Night of Champions, puts an end to Stings WWE career before it really had a chance to go anywhere. One can argue Stings job coming to WWE was to put over young talent, which makes sense in his loss against Rollins but certainly makes zero sense in his loss against Triple H. I think its almost certain that a WrestleMania match this year wouldve sent the 56-year-old superstar (who was likely set to retire soon anyway) off into the sunset with a win. What could have been.