With the newly added groups+ and groups public instance, I'd like the ability, with the right permission in the group, to close the said instances or to convert them into normal publics maybe.
I've created some 2-3 weeks ago, they are still currently alive weeks after even tho there's nobody in it to moderate them anymore.
That might clug the groups localisation in the social menu with instances that have nothing to do anymore from their original purpose.