In what seems to be the case, Enzo Amore, Colin Cassady (and Carmella) could reach the main cast of WWE without having been NXT Tag Team Champions
The group has already fought in main event functions, such as in the dark match of Monday Night Raw and in the recordings of SmackDown!, where they defeated two local wrestlers in a non-televised match. These wrestlers were Randy "The Catch" Hawkins and Khash.
While it is common for some NXT elements to do test tours with WWE, in the case of Amore and Big Cass there are discussions about whether to debut them soon on TV, since the division is somewhat stagnant: There are currently no plans for the Lucha Dragons to have a rivalry with The New Day, while the Usos have lost a lot of popularity (just look at last Monday on Raw, when the audience applauded the Dudley Boyz's heel turn).
The debut of Amore, Big Cass, and Carmella could take place after WrestleMania, and along with them, The Hype Bros would be promoted: Zack Ryder and Mojo Rawley.