Input based matchmaking debate

So I play halo with a controller even on PC, I would like the option in infinite to be a choice players make instead of something you’re forced into doing, they already have a system in MCC that makes it player option, I have a lot of friends that want to get into competitive halo on PC and they refuse to use controller, I feel like making it player choice will give you more options on who you play with in a competitive setting! Thoughts?

As long as there is a strong population, I have no issue with the option being available.

It should be mandatory crossplay for low population playlists though.