I assumed that is what they meant by custom scoring? Could maybe message them as they say they are open to change and improvement, could be an opportunity for themJust a FYI, I setup a custom league on it a few years ago as a test, unfortunately its still points based and doesn't appear to have any option for category based matchups.
I'm looking for alternatives for my cat based UF keeper league that's been running for 10+ years as well, so if I find anything I will share!