In CSP 1.5, I could, for example, add a new "opponents_something" folder, add "vivian" folder inside it and then add new clothing set in it, and it would be loaded for the Vivian character.
Now, it is not anymore the case in 1.6. No new clothing set loaded. The only way to work around this is to directly add the clothing set inside the "opponents_core" folder for Vivian.
Plus, I get following in console as error:
missing opponent.properties: .\opponents_something\vivian\opponent.properties