Yes, however work on groupings site wide could be most useful too. I'm thinking about this to hide categories and courses to simplify the presentation of the site in, say, a school or to ensure total separation of client son the same site.
If you have some thoughts on use cases for site wide groups and groupings feel free to add them to the docs page where Site wide groups are being considered.
General developer forum
Global (or context) groups in Moodle 2.0
This discussion has been locked so you can no longer reply to it.