I'm gonna implement 1-50 in one playlist and one playlist only. I'm also going to base how fast you rank up based on your K+A/D for the first few months. Also, everything is AR starts with Camo, Jetpack, and Armor Lock loadouts. Enjoy my implementation of your ranking system.
Now do you see that the main faults of Arena were not on how it worked, but how it was placed? What happens if you change it to the following? Division ranking in 5 playlists where you play 5 games to get matched into a division. You can then move up or down in your division until you are at the top or bottom and then move up or down a division based on how you play. Wow, that sounds like it appeals to casual players by giving them progression in 2 places. Wow, that sounds like it appeals to hardcore players by making sure they are at the top of their game to stay at the top. How do we prevent rank lock? Reset the divisions and make you play another game to compare with your previous average and re-evaluate what division you should be placed in.