Perhaps others have already figured this out, so if you have, please share your secret.
In my mind, the blessing and the curse of DK3 was the "Recent Diaries" list. Lots of chaff that you had to sift through to find the wheat, but you never knew when you might find a gem that you might not have seen otherwise. It's like using a thesaurus or doing legal research the old-fashioned way, finding something around the edges of your specific search that you'd never find if you weren't flailing around a bit.
Now, I am starting to create my list of folks, tags and groups to "follow," and that results in my "stream" being nicely populated [I can tell Kos isn't in the middle of middle age yet since "stream" begins to take on an entirely different meaning for us, but I digress ...]. I also review the "Recently Rec'd" list, of course, but I can't help but feel that I'm missing the serendipity element that made the "Recent Diaries" list an adventure, since every diary on the Recently Rec'd list has already been discovered.
So, what's the fix? Just follow more and more people, tags and groups and trust that the "stream" will get me everything that could possibly be interesting, even if it's outside the paradigm I'm currently trapped in? Help!