There is people who love the 1-50 system (which I do personally), and the newer system with shown MMR and brackets.
My idea is have a system that is in-between the Halo 3 and Halo 2 in terms of wins for 50, with 10 qualifying matches to place you more closely to where you need to be. Add in extra bit of emphasis past 50 for the people who want to brag. Such as: Top 500, top 100, top 50, and #1 spot. (which is you keep gaining MMR, the more MMR you get, the more you will play with similiar MMR players at 50, but not guaranteed) With a unique stylization symbol like there is for the MCC. Maybe add in a nameplate for each season, to show what bracket you had previously achieved, or if you were in the top 500+ players ect. Also would be nice to show your MMR when you go to your profile to see how many wins you need for the next rank. I think this combines the best of both systems.
When implemented, it needs to be strict. 5 up and 5 down for people playing with and against you. Add in team matching. Maybe in the future in it’s life span, add in a certain xp rank to play ranked to deter smurfing, and add in two factor authentication. Sooner you nip problems in the butt, the better.
Thoughts, suggestions, criticism? improvements? So 343 can get an idea of what to do for ranked, for the best possible experience for ranked matchmaking. (I will further update this thread, when enough comments have been made to determine what the community prefers to happen).