I would love to be able to publish blog posts but not have /blog/post-title. I want to have /topic/post-title. I guess technically its just the ability to change the permalinks of posts (to become child URLs of topics) but surface in the "/blog/" category pages of my choice also.
Seems integral to / useful for topic clustering and site architecture.
P.S - see image, I cannot even do this manually by creating a "blog" with the slug being the appropriate parent.