Literally just the title, get rid of champions as they are a boring round peg to round hole criteria for each season that diminishes build diversity or if you're not going to do that at least add some sort of role queue feature for activities with them when you add the long overdue matchmaking for activities that are boringly easy with 3 people but too difficult solo. Especially considering when you lock triumphs behind these activities and majority of people will just LFG for them anyway
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Like what activities?