A common use-case for IPFS is to host websites using DNSLink. That is, /ipns/foo.com would resolve to /ipfs/Qm....

This is the perfect place to stash additional content routing information:

TXT provider=/p2p/QmProvider1
TXT provider=/p2p/QmProvider2

The tricky part is somehow feeding this information through to the right place in go-ipfs.