I'd love to see/hear this as well! If I could offer up some content ideas? You could look at taking some of the design articles on this site and applying them to existing maps. Another idea might be to request interviews with pro players and/or 343i devs. For the pros, ask them about what they like to see in a map, how they formulate a strategy, anything to get your listeners inside the heads of the highest skill players. This doesn't just have to be HCS participants (though that would be pretty cool); you could feasibly check Halo Tracker leaderboards for top 10, top 25, etc players in a given playlist. For the 343 devs, nearly anything would be great, but especially things not included in the Sprint. You might have to build a bit of a following before approaching the HCS pros or get a look from 343, but it would be something to shoot for.
Im glad this thread reemerged from the depths. Because I didn't see it the first time. I am definitely interested in helping make this a reality