This is almost identical to what we were doing at Bungie Labs in 2008, except Meteor is much better. Bungie suffered from defining their own language (they didn't think this could be done in JavaScript); having a proprietary, web-based IDE; not having self-managed deployments; and being too early in the market (and probably some other stuff, too).

Without auth Meteor was interesting but not very useful. With auth, though, it becomes much more exciting.