I think the network effect really is big. And nostr already has a really big network. Likely bigger than Lemmy. I don't think there is anything I would want to keep from the backend. Some of the mobile clients are pretty good though so we could write a backend and keep the API almost the same. Then have minimal effort to adjust the front end. Getting other people on board to host instances would be the hardest part. And very likely could fail I'm just throwing out ideas here. It might be better to build a layer on top of nostr to get those hard to implement features like stickied post.