Wonderboy is fighting Belal next month. It's a bounceback fight for him, and even if he wins, I don't think people will be high on him getting another run to a title without beating someone big. Colby would never agree to fight him, so beating Khamzat could propel his popularity and/or standing in the division towards a title shot. On the flip side, if Khamzat beats someone as well cemented at the top like Wonderboy, no one could deny his path to the title.
As for Burns, I'd like to see him vs Colby, even if that's still too big of a fight for Colby right now, who needs a step back. It's an interesting fight between two of the very top.