I love that I can self-host this! Are there plans for federation? Rather than maintaining a whole separate index for myself, I'd love to self-host an instance

I love that I can self-host this! Are there plans for federation? Rather than maintaining a whole separate index for myself, I'd love to self-host an instance of this, only indexing sites that aren't in the main index, and then falling back to the main index / merging it with my index to answer queries. I wonder how easy that would be with the current architecture.