I cannot speak for the team but I do believe adding your vote to the feature request here is going to be the best option on hopefully getting this implemented.
Currently as you can see in the comparison the Free Organization is not available for self-hosting, though I understand this is the request here.
With a multitude of requests and “to-do” items I imagine it can become a challenge to manage and prioritize, though as I’ve seen from other postings when feedback is promised to be passed along to the team, it genuinely is sent to the team for review and not simply PR.