This looks good - was my impression as well and I will wait for the next update before I try it. I’m still at 0.9.9.4. I’m also not in any private groups here on meta so even if you have it I can’t test it. 
One question, though: is there a way to limit who can do invitations? some groups we will want anyone to be able to invite others to look at topics or join the group, but for others the owner will want to have more control/oversight over who’s in the group. In any case they might want to at least know what’s happening and who’s in the group!
I’ll be testing use cases relevant to Kabissa over on the Kabissa discourse and will let you know how it works out and what I learn.