#2 UP: Ricochet
This guy is gradually becoming one of the most sought after free agents in all of professional wrestling. He will very likely end up in the top 10 of the next PWI 500. If he signs up to the WWE, I do believe he will need some time with the crew at NXT.
Even though Ricochet is a proven performer, he will need a little time to get a full grasp of the "WWE way" of business.
It's also important to note that as "Prince Puma," he helped get Lucha Underground established, and off the ground. A huge factor in why they are still doing so well, with such an unorthodox format, is because of some of the original stars, such as Puma.
In October of 2014, Prince Puma outlasted the other 19 combatants in the Lucha Underground "Aztec Warfare" match, where he became the first ever Lucha Underground Champion.