I'm making a quick post now and will try to follow it up later.
As we know everything is in flux. Currently there are three potential subforums for Irish learners and speakers, but it's not very clear how they should function. I definitely see a potential for a Gaeilge only subforum, either in the Irish general discussion or the Irish to English subforum with wasn't a thing at Duo. In fact, it doesn't make sense IMHO even though a space has been reserved. That might be the perfect place to have an Irish only sub.
Unfortunately, tá a fhios agam nach bhfuil mé in ann faoi sin, moderating as Gaeilge, that is. We really need a mod who is fluent.
In the meantime other organization can happen. Post any ideas. I'll check back go luath.