There is a problem with fellowship atrophy, and better players don't want to stab their old fellowship in the back, and move to a mythical gold fellowship. I don't know how many there are on each map, because the participation stats aren't shown - only the score. At the time my archmage recruited me, he thought his fellowship was pretty good, then there were deaths, heart bypasses, strokes, and we dropped to 10 chests. Typically 3 make the top of the Spire, but making the top doesn't doesn't really input much extra score to the group.
Our group is just struggling to find anyone else. The young players around, play the game incorrectly and won't answer hails, for fear of being put under pressure.
I'm going to have to try more novel methods of recruitment