#4 Seth Rollins' first reign as the WWE Champion had ended abruptly and the Kingslayer never had a fitting end to it
Seth Rollins had successfully cashed in his Money in the Bank briefcase in order to win his first WWE World Championship. The former S.H.I.E.L.D member had a lengthy reign with the championship where he feuded with the likes of Brock Lesnar, Kane, John Cena and also his former S.H.I.E.L.D brothers. An untimely injury at a Live Event had led to Rollins' reign end abruptly and the Architect has never received a good world title reign ever since.
He had won the WWE Championship from Roman Reigns at the Money in the Bank PPV in 2016 but lost it inside 10 minutes as Dean Ambrose cashed in his MITB contract to steal the title.
Also, at WWE Battleground he was not the one who ate the pin while Triple H's interference cost him the Universal Title. Seth Rollins has never been in the main event scene since August 2016 and it's high time the 2-time WWE Champion returns to the top of the mountain.