What will the Arbiters role be in Halo 6?

The Arbiter was forgotten about in Halo 4, shown reclaiming his planet in Halo 5 and talking to the UNSC in the end. What will do in the next installment?

Hopefully he’ll replace Locke as the other playable character if 343 decides to split the campaign again… I’d prefer playing as him with a squad of badass Elites + Hunter over Fireteam Osiris anyday… (Sorry Buck, you can come too…)

Hoping for a Chief, Locke, Arbiter, and (ugh) Palmer fireteam in 6.

He’ll fight the flood with Chief on the Halo ring shown at the end of the game