XP earned in matches

I’m not sure if this has already been mentioned or not. I noticed when playing multiplayer you earn XP in matches for doing certain things like getting kills(+100), assists(+50), capturing the flag,etc. where does this XP go? Are they planning to add an overall progression system similar to what they had in Halo 5?( level 1-152). Right now you earn XP in matches but it doesn’t go towards anything.

Challenges and Games played earn you XP. In game xp you earn for kills just contributes to your personal score for that game so you can tell who the mvp is when you bring up the kda page ingame

The only xp progression system they have is the battlepass for $9.99