I would love to see an official static site mode for Ghost (and Wordpress). That way we can get both a nice authoring experience and the low cost/security of S3 hosting.

This is always the first thing I look for in the new version announcements for big blogging platforms.

Would be amazing if I didn't need to know a completely separate technology and/or hack together bridges/site "staticizers" in order to have a quite basic functionality (the site be 100% static when no back-end dynamic interaction is needed).

That said, there are third party plugins for WordPress that do this. Don't know about ghost, but my hopes are for first-class support for this.

Check out Publii, then (Open Source too). It's quite similar to WordPress in a lot of ways, but it's a desktop app that uploads static files. https://github.com/GetPublii/Publii