#1 A last run with the United States Championship

Kurt Angle is known to be one of the most patriotic superstars in the WWE, and so the company can use a United States Championship storyline to end Angle's career. The US title is in its worst condition ever. WWE Creative have had no plans for the title whatsoever. This could change if Kurt Angle is inserted in the US title picture.
The WWE Creative team can have Kurt Angle bid farewell to RAW after multiple defeats to Corbin and McIntyre, which will force him to join the Land of Opportunity, SmackDown Live. Kurt Angle would qualify for a multi-man ladder match for the WrestleMania PPV on an episode of SmackDown Live. Then at WrestleMania 35, he will capture the US title in what will be an iconic moment.
Angle would hold the gold for 4-5 months and would feud with some of the top stars of the blue brand. Finally, around SummerSlam, a new heel from NXT (Adam Cole or Aleister Black) would join SmackDown Live and start a feud with Angle.
They will collide in a title match at SummerSlam which would see the crowning of a new champion, and the next Tuesday on SmackDown, the Olympic gold medalist can say goodbye to the WWE Universe, saying that he fulfilled his dream of winning the United States Championship at this stage of his career, and has no more ambitions in WWE.
Having this storyline on SmackDown would improve the show's ratings, and also raise the US title to newer heights.
A former writer on why John Cena's heel turn has flopped HERE