Be realistic. Filling out forms to get CI runners means no serious users will be attracted. They can just go to GitLab instead. And even then, a migration wouldn't be fully seamless.
Those are immediate show-stoppers before we get to contributor pool sizes and network effects.
My purist young self picked Gitorious over GitHub. I even vaguely remember the KDE presence there, so it was a trusted host with big(ish) betters on it. But it closed shop soon after, and that was a quick learned lesson.
I will be more intrigued by the first jj-native forge when it appears. I may even help alpha test it, as it may bring a breath of fresh air to the space, unless it's going to be AI buzz-filled. In that case to the trash blocklist it will go.