We’re not actively working on this now. But, our recently launched global object store may fit the bill instead. A public bucket could host and serve your statics if you can upload them yourself.
Hooking this into [statics] would take some work, but this would be easy to implement by uploading assets in your release_command with any stock s3 client. Setting cache control headers should work, and it doesn’t require that your app be deployed in multiple regions to work.