You raise some interesting ideas.. Yet I don't see this happening any time soon, the cost is the prohibiting factor. SME's have been major driving force behind Virtualisation in the past 3-4 years, the simple reason is it was cost effective and offered a large number of benefits.
What your describing had a lot of potential, but the technology behind it will come with a massive premium, putting it out of reach for your average SME. There are already a couple of players who offer a similar system, Nutanix and Scale Computing being ones that springs to mind, but they are at best niche providers.