#2 Ali
It was rumored that Ali was suppose to win the men's Money in the Bank ladder match before the plans changed and the winner ended up being Brock Lesnar. The company has been high on the star ever since he shifted from 205 Live to SmackDown. He was also expected to get the push Kofi Kingston received after he suffered an injury.
But WWE is reportedly still high on him and could give him a push in future. Well, that push should be taking place right now due to the declining TV ratings. Since Ali is a fan favorite, the fans would be excited to see him in the main event picture. If not that, he can also be a mid-card champion for the time being.
#1 Braun Strowman
This man was one of the hottest stars of the WWE in 2017, but all of that came to an end after he was pushed to the main event scene. As whenever Braun Strowman gets a huge push, the company backs off from giving it to him. There have been various instances where he was pushed down the card after trying to reach the top position.
Now, there have been rumors that Vince McMahon doesn't view Strowman as the main star anymore. Still, he needs to push him in order to increase the WWE TV ratings. As it was seen in his 2017 run, the viewership of Raw was steady and most of that has to be credited to Strowman. Even this year could be the same, if the company decides to push him.