Regarding communities: I don’t think it’s necessary for such a website to have a particularly strong conception of communities, outside of each particular collective action. For each collective action, there should be robust tools to make it clear who is / isn’t qualified to take part in that action, but this should be handled on an action-by-action basis, and there’s not much benefit to having a community structure outside of individual actions. Such a structure would simply add needless effort to the development and maintenance of such a website, which will make it less likely to achieve its mission in the long run.
Regarding communities: I don’t think it’s necessary for such a website to have a particularly strong conception of communities, outside of each particular collective action. For each collective action, there should be robust tools to make it clear who is / isn’t qualified to take part in that action, but this should be handled on an action-by-action basis, and there’s not much benefit to having a community structure outside of individual actions. Such a structure would simply add needless effort to the development and maintenance of such a website, which will make it less likely to achieve its mission in the long run.