Raids don't have matchmaking aside from guided games because you need to communicate with everyone else. Last thing any raid team wants is to randomly match up with someone without a mic or someone who just won't talk for whatever reason or someone who doesn't speak the predominant language of the group. The mechanics already throw enough things into play to make them challenging we really don't need any more complications thrown into so HomieMcHasNoMic can get some trash trustee from crypt. Trials does have traditional matchmaking because it's also a commitment. A commitment to the passage and your teammates. With matchmaking you'd basically have to match alongside players with the same exact passage state as you (i.e. 4 wins 1 loss) and against that same metric. Which would lead to either long queues or poor connections in matches or likely both. Current system does connection to keep things stable for both teams and kinda leans towards wins on passage tho that part can be strange given you can match against teams on their 6 win several times in a single passage. In short it's about commitment. It's barely gear related anymore and any gear preferences for teams are generally super easy to obtain like xeno and lament.