#2 EC3

Let's be honest, EC3 flopped in his first tenure in WWE. But now, he's in the top 1%. That douche bag rich boy persona can really brighten up the mid-card on the main roster. He with the Intercontinental Championship just seems so right.
Feuding with people like Seth Rollins, Finn Balor, and more on Raw. On the other hand, people like AJ Styles, Rusev, Andrade Cien Almas, and more, could give him a run for his money on Smackdown Live. If WWE were serious about investing in their stars of tomorrow, bring EC3 up in something like the Royal Rumble, don't just say "as per the Superstar Shake up, these superstars are getting called up" only for them to not be used for months before being put in a match.
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His gimmick is to feed off of attention only to turn his nose up at people and be the biggest jerk he can be. So people need to see him and react to him, this is the only way he will thrive on the main roster.
This is the fire and passion that lacks in the main roster:
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