Since today we're bidding farewell to LayerVault, and personally I haven't been able to find a worthy replacement (or at least one that satisfies my needs), I've been thinking more and more about developing an open-source alternative to it.
It would be based off of existing infrastructure. It could for example leverage GitHub's LFS, or Amazon's infrastructure for hosting the files. Naturally, it would be open source software and you'd have to bring your own subscription to those services for it to work, but it would surely cost less than a full-fledged service. If you already have a GitHub organization for your company, it's basically a zero-added-cost thing.
In my mind, it would offer the basics that we've gotten used to: a desktop client for syncing changes to whatever's behind the scenes (GitHub, Amazon), and a piece of software that would power the web-app to run on your own VPS, from which you'd get a web interface for version control, browsing and collaboration (very similar to what LayerVault offers) and which interfaces with whatever service you'd use for hosting the raw design material.
What I would like to know from you is: would there be interest in creating a community effort to develop something like this, and would you use it if it existed?