Average many ranked game leaderboards together to create a "global" ranked leaderboard. Each game should be weighted equally and averaged among its sub categories. Then all games are averaged.
If a player has not played a particular leaderboard, their ELO counts as 0 for that leaderboard.
MMR should also be calculated based on this combined ELO by either averaging MMR across leaderboards or decaying based on the least recent gamemode played.
Average many ranked game leaderboards together to create a "global" ranked leaderboard. Each game should be weighted equally and averaged among its sub categories. Then all games are averaged.
If a player has not played a particular leaderboard, their ELO counts as 0 for that leaderboard.
MMR should also be calculated based on this combined ELO by either averaging MMR across leaderboards or decaying based on the least recent gamemode played.