#3 Seth Rollins
Despite only being 34 years of age, Seth Rollins seems to have been around since forever. He'll complete 10 years in WWE in August this year and it's safe to say that he's made the best use of every opportunity that has come his way in all this time.
A Grand Slam Champion and a Triple Crown Champion, The Architect has won it all. He's also won the Royal Rumble and the Money in the Bank briefcase. Besides Roman Reigns, he has been WWE's most reliable Superstar in the last few years and received a consistent push in the main event scene.
But it's not just his wrestling ability that makes him so dear to WWE. He's spoken out in favor of the company on multiple occasions in the past, something that he's received flak for as well. He's also seemingly putting over young talent with his Monday Night Messiah gimmick and that could very well be his role going forward.
Seth Rollins is one of those Superstars whom I not only see staying with WWE till his retirement but also envision becoming a big backstage presence in the future, possibly in the role of a producer or something along those lines.