There really isn't a good spiritual successor currently. Someone should clone the UX of WP Admin panel, plugins, etc and drop the worst tech debt. Base it on React and make it really easy to deploy.
There are also the so called "universal CMS", which are headless but with a frontend SDK to achieve the same WYSIWYG, but with a modern frontend framework and deciding exactly what content editors can do. See for example React Bricks.
- static website generators (Hugo, etc)
- WYSIWYG editors (Wix, Squarespace)
- Frontends (NextJs, etc) backed by Headless CMS (Strapi, firebase, etc)
There really isn't a good spiritual successor currently. Someone should clone the UX of WP Admin panel, plugins, etc and drop the worst tech debt. Base it on React and make it really easy to deploy.
(edit: formatting)