#1 The arrival of a Knockout artist
Kassius Ohno has been ready to be called up to the main roster for a while. In our estimation, he's reached his ceiling in NXT, where he is a top player but will probably not get a run with the belt, from all likely indications.
Could Ohno fare better in the main roster, like Alexa Bliss and Carmella have done since the girls were called up? In our estimation, he certainly could. He's already one of the best wrestlers on the planet and certainly no slouch on the microphone either.
Imagine the matches he could have with Styles, Corbin, Zayn, Owens, Orton, Rusev or Nakamura. The possibilities are endless.
After all, it is tradition to lose at a Takeover event, before one is called up to the main roster. Ohno lost to Lars Sullivan at NXT Takeover: WarGames. You put two and two together, reader!