illumos is awesome. Many Sun technologies live on because of it and are still improved upon by those who vested much time and love to make Solaris as awesome as it was. Imagine say, FreeBSD implemented SMF, BART, Fire Engine, Zones, Crossbow and a better ZFS boot (one which doesn’t require swap to live on a separate partition), I’d say it’d be awesome. Because of illumos, it is possible.