Address book Implementation gaps

[SangameswaranRS]

I don't see Address book being of any use anywhere, Needs to be utilised properly, Maybe we can use it to make the lives of dev's easier,
For example instead of host.newStream(protocol, id, address) (which directly connects to the host address via Netty dials)
maybe we can reduce it to host.newStream(protocol, id)

Please correct me if I'm wrong.