Carolita -- Yes, totally, the point of this tool would NOT be to replace those existing organizing tools, but make it more likely that new users already part of this community could organize within it.  It would be up to communities like the ones you describe whether they would want to set up parallel shop here.

Do you think those existing subgroups that you're a part of would find such a tool valuable here, at least in the way I've described it so far?  Or would you be able to suggest any features for it that would make it cooler?

thanks so much for your thoughts on this