A number of times when I’ve included custom CSS in the Bricks > Settings > Custom Code option, it ends up being overwritten / lost when I import a previous Settings export from another website for Bricks Settings. Since custom code is most often site-specific, I’d like to suggest that exporting Bricks Settings exclude the Custom Code sections (i.e. “customCss”).
Or perhaps have an option as to whether to include or exclude certain types of settings. An option like that would address this Builder Access concern too.