Great idea. Sort of. Except it seems to have two critical issues: 1) it doesn't appear to have any way to handle our staging->production cycle, where the transactions coming into production are replicated to staging during our testing cycle, then eventually staging is rolled to production via mechanisms I won't go into right now, and 2) it doesn't appear to actually work -- it claims that the default security groups that are needed for its version of Chef to work don't exist, and they never appeared later on either. Which isn't because I lack permission to create security groups, because I created one for an earlier prototype of my deployment. This appears to be a sporadic bug that multiple people have reported, where the default security groups aren't created for one reason or another.
Eh. Half baked and not ready for production. Oh well. Amazon *did* say it was Beta, after all. They're right.