Here is the simple explanation of ELO;ELO Explained (no math)

The performance in the ELO system, as with the Harkness system, is not measured in absolute terms. It is inferred from wins, losses, and draws against other players. Players’ ratings depend on the ratings of their opponents and the results scored against them.
After every game, the winning player takes points from the losing one, and the number of points is determined by the difference in the 2 player’s rating.

• If the higher-rated player wins, a few points are taken from the lower-rated player.
• If the lower-rated player wins, a lot of points are taken from the higher-rated player.
• If it’s a draw, the lower-rated player gains a few points from the higher rated player.

this is from https://medium.com/purple-theory/wha...g-c4eb7a9061e0


basically elo works as intended and how it should work, so the easier solution is to have elo locked rooms so higher ranked players only play other people with higher ranks etc, instead of having to change the whole ranking system and that is also how ranked has worked in tb in the past, Lets say back in 2014 etc you had global rank and mod ranks in every server you joined elo worked the same then as it does in this ranked season.

TLDR It would be easier to have elo locked rooms than change the whole ranking system.

Also there has been elo locked rooms in the past.