That's a good question... we deliberately use the category view since Clojureverse was conceived as a place for project mailing lists, and having the traffic of different mailing lists all mixed in one stream seemed a like a bad idea.
However, in practice Clojureverse is mainly used as the Chestnut mailing list, and even that is pretty low traffic. I can see the appeal in having the latest topics on the front page, at least that way it could look a bit more active. So... let's give it a try! I'll switch it over now.