Looks very cool!
On the migration/consolidation/deconsolidation: it would be really great if the proxy/redirect technology was generalised and made available broadly/configurable. It would be so useful to be able to move databases between servers clusters without reconfiguring clients. If it supported something like SNI allowing multiple databases with the same name, even better!
I'm coming from an IIS/HTTP background and there's so many more options there for dealing with these topics. There we can configure any number of server/dns names, on any number of IPs, and redirect/proxy between them without having to reconfigure clients at all.
Lest I mention even the infamous "full" database containment mode! 😛 (I think really this would need some sort of "database grouping" or "virtual instance" concept)