#1 Must not - John Cena vs Kurt Angle looks like a much bigger deal

Kurt Angle was John Cena's first-ever opponent in the WWE. A young John Cena confronted the Olympic Gold Medallist, Kurt Angle, on a SmackDown episode (June 2002), and today John Cena is a 16-time World Champion in the WWE.
The WWE Creative has no plans for John Cena at WrestleMania 35 and it would make sense to have him battle Kurt Angle in his final match. As mentioned earlier, they have a lot of history between them. Thus, this feud may not need that much development.
Also read - 2 superstars who should be John Cena's opponent at WrestleMania 35 and 2 who should not
With just 3 weeks left for WrestleMania 35, WWE can announce John Cena as Kurt Angle's WrestleMania opponent or can even have Kurt Angle come out on RAW next week and issue a challenge to John Cena. Either way, this match looks WrestleMania worthy and more meaningful than Kurt Angle vs Baron Corbin.
Becky Lynch has been challenged HERE.