I think we've been thinking similarly. Decentralization will have it's costs. I've been thinking Opt-In centralized search for personal repos, maybe as a gite

I think we've been thinking similarly. Decentralization will have it's costs. I've been thinking Opt-In centralized search for personal repos, maybe as a gitea (or other self hosted options) plug-in. But as you suggest, maybe existing features can be leveraged to prove the social/discoverability.