(dev here) I hadn't really considered it as a full replacement before, but hosting it alongside the instance like a desktop version of m.lemmy.world is something I think would be neat (at least one instance is doing that, with a custom Dockerfile because I haven't made one yet). I'd need to add some mobile support (which I'm not against doing in the future) and some admin tools probably before it could be a full replacement, both would probably not be for a bit still because I'm still working on feature parity for normal users. Also still waiting on a Lemmy issue to be fixed before I can add image uploading which is the most basic feature the site lacks at the moment.