I'm beginning to catalog behaviors here https://www.mediawiki.org/wiki/Wikimedia_Foundation_Design/Agora_Control_Library/Behavior

I'm using the format of questions to capture behaviors, that won't be the final state of this, but its helpful to capture some of the places that will need clarity, like the control UI style guide itself this will grow and change over time, as people interact with it. 

I'm done for the night, so if you have questions to add, please do so, I'll be expanding on answering the questions, and beginning to write guidelines and create images to illustrate some of the principals.