The long awaited Paramount + show, Halo, has released a trailer where Master Chief speaks. You can hear the blatant disregard for anything remotely close to Steve Downes voice. You used cortana's voice actor, why not him? 

Please do not mess this up. Fans have been waiting for something like this for years.

Also, the spartans were not created for the covenant. They were created for rebellion on Reach. 

This strikes true to my heart because Halo got me through some of the worst and best times of my life as a kid.