Should stay in NXT: Kairi Sane
Fans have truly embraced Kairi Sane in NXT. As one of the top wrestlers on the planet, male or female, she brings her A-game to every contest, whether televised or in front of a few thousand people.
Kairi Sane won the inaugural Mae Young Classic. Her InSANE elbow drop is, quite frankly, a thing of beauty. Many have categorized her as the future of women's pro wrestling, in both style and poise.
The Pirate Princess recently captured the NXT women's championship from the Queen of Hearts Shayna Baszler. The Queen of Hearts had seemed utterly unstoppable since her official NXT debut, and a lot of folks were surprised when Sane managed to cleanly defeat her so quickly.
Sane doesn't really need to stay in NXT; she would do fine on the main roster. However, NXT needs her, as a strong international female star helps the brand appeal to a worldwide audience.