Why not base ranked matchmaking off CSR

What’s wrong with if you win you go up 10csr if you lose you go down 10csr while exclusively playing people who are your same csr and if people are partied up just go off of who ever has the highest csr
to eliminate boosting.
Champs play-Champs & Medium/high Onyx’s

high Onyx’s play-Champs & low/medium/high Onyx’s

medium Onyx’s play- low/medium/high Onyx’s

low Onyx’s play-low/medium Onyx’s & high diamonds

high diamonds play-low onyxs & high\med diamonds

Medium diamonds play- low/ medium/ high diamonds
ect…

If you play really well and lose just make it less of a penalty like maybe they only lose 5csr on that. If you play really well on a win and carrry your team maybe you get 15CSR as a reward.

Honestly im just tried of winning ten in a row and moving up a sliver even if I go 20 & 10 in a slayer because the game thinks my msr is lower then my csr rank.

The latest Matchmaking Feedback topic explains this in detail
https://www.halowaypoint.com/en-us/forums/58b8518e005f432381ab99fbcaf931e0/topics/matchmaking-feedback-update-%e2%80%93-may-21/7d3f6e81-5f9e-44f7-b5cf-30f85d13f320/posts

Also, Dr. Menke has previously discussed why MMR is used and the difference between it and CSR. It’s worth reading through some of the previous updates for this information: https://www.halowaypoint.com/en-us/forums/58b8518e005f432381ab99fbcaf931e0/topics/mm-feedback-archive-descriptions/b28457ae-65fd-4dc2-a4b6-1a3a1a75f771/posts