Must have been said in the past but just thought I would suggest again.
With the new very hard adventures and people struggling with things I think BB need to rethink the how many adventures you can be in policy. Probably the biggest cause of arguements is not being able to join someones adventure due to being stuck in another where the person doing the adventure has under estimated how long it will take them.
My suggestion is being able to be in your own adventure and 2 others.