Mikael Hasselstein said:
How prevalent are adventurers in this new version of the game world? Are the PCs (almost) the only ones setting on adventuring, or are they constantly bumping into others trapsing after loot and treasure? (Obviously, this is not a two-choice question, and there are degrees in between.) The more adventurers are common, the more the social barriers between the three classes breaks down.
'Adventurers' aren't the only ones who don't fit neatly into one of the three classes, according to the designer diary. There are other examples of people who may have more money than they should, such as mercenaries and thieves. And the diary describes how people deal with such types - they are outsiders, but outsiders with money, so people are willing to deal with them.