Earlier quoted context omitted.
I run a Yahoo-style directory for blogs and articles I find: https://href.cool/ . I'd personally like to see more personal directories rather than big monolithic directories of everything - those tend to collect spam.
I like this idea, but I feel like it's shifting the problem to "how do you discover cool directories made by other people?" Maybe an idea would be something like what you have, but using some sort of standard that could be pulled down similar to rss feeds?
You discover a directory like mine just as you would discover any other link, johntash - by coming across it as you read, perhaps on Hacker News. If there were more directories, they would be easier to discover. They happen to be richer discovery points than a normal blog or profile page.