Maybe I am not understanding you well enough. A green DIR is supposed to be open for anyone who wants to respectfully participate on it. No identification with the host group is necessary.
Correct, but then why does it need to be a DIR. The concept of the DIRs is that people who identify with the host group are in fact the hosts. They could in fact change the color of the DIR by vote, so there will be an identified group. It seems bizarre to me to define that group based on their identity not their ideology. Would we create a racially based DIR? A Blond(e) group? All the other DIRs that I can see are ideologically based, and so I don't like that change.
Why does this need to be a DIR and not a subcategory of Social/General Discussion/etc? If the purpose is to discuss GSM issues, then that would make far more sense to me than creating a DIR. If the issue is to have a safe(r) space to talk about GSM matters, that's the Rainbow room. Which I would think needs to remain "private" for that reason.
There's also a sense of ghettoization of the GSM topics, most of the time they fit right alongside everything else: politics, relationships, social world, family, etc. But I acknowledge they don't always. I think a DIR would be more likely to encourage that ghettoization than a discussion group.
I don't want Green or Blue or Purple, if it's going to exist I want it to be black.