They should make the Main Scenario duties single player and remove Main Scenario from the Duty Finder entirely.

Adjust the experience and tome bonuses of remaining duties to compensate.

At this point the Main Scenario duty is not fun nor engaging for anyone involved. I have seen a couple new people since Shadowbringers but is being dragged though the duties at a break-neck pace good for them? I do it to level alts while I spend the entire time watching YouTube on my phone.