I'd like a federated ecosystem for game mods that uses torrents for file downloads to reduce server load. Something to act as a safe haven in case NexusMods enshittifies. It'd also allow more diverse sets of rules through servers, so you could have versions of Nexus, LoversLab, etc. all sharing a framework instead of everything running smoothly for one and not the others.
Plus, NexusMods have really dropped the ball with regards to permissions. Their default permissions are set up so that if you're a mod author, other authors need to ask you for permission to use your mod as a dependency. Not just crediting you and linking to your mod, but asking permission beforehand. I don't see how anyone can look an that and not see it as insanely hypocritical