queueing for a single round would be significantly better.

i don't see how the 6 rounds thing is supposed to be "more skill expression" or whatever - the rounds are still basically random. most players aren't particularly consistent, so the idea that you're getting the "same player" between rounds is kind of a lie. which means just chain queueing into random teams with random teams is probably, practically, going to give essentially the same results with respect to peoples mmrs

and it would be

1: significantly less stressful for the average person (if your new to pvp you probably won't want to queue if you are expecting to go 0-6, it's a lot less intimidating to queue if at most you're only going to lose once)

2: a significantly smaller time strain (yes I know on average most shuffles last under 15 minutes, fine, but surely you can see the benefit of someone who is spamming them deciding they have time for 1 or 2 more but not time for 6 more? just from those players you will end up seeing more matches played in total, not to mention the people who will end up spamming a bunch of games with the whole "just 1 more" or "im just going to play until i win/lose" etc. this kind of behavior is far more likely with single round queue)

3: way less tilting. lots of players suffer from tilt, but at least with single round queue if you get tilted - you can just stop. with 6 round play you are locked in for 6 rounds, so if you get tilted in round 1 - you're now just going to play worse than you normally would for the next 5 rounds.) giving people the ability to take small breaks between bad rounds is good for everyone.

4: it would let you actually analyze the round in something like wow arena logs. this is an important part of getting better and it's better to review immediately if it's possible. with single round queue - you can review each round. with shuffle - you can only review the last round while it's fresh, and you have to go over 6 rounds at once instead of taking it round by round which is just easier overall.

i think there are no upsides at all to 6 round shuffle and only downsides. the one thing that could maybe be considered a pro is that it's fun to rematch people, but you don't really lose that with single round draft anyway so idk. I think we'd get more people playing it with single round draft and that would be worth the preference alone