When you want to navigate to a feed in DintFeed, you can click on it under All Feeds,
search it from search window, or use Go to Feed menu of an article.
With DintFeed v1.3 released, you can now move specific feeds to a folder, set the folder
as quicklist folder.
Then you will be able to list all the feeds under the folder
in search window with shortcut ⌘ + L.
Go to Preferences -> Advanced in DintFeed, select the folder as quicklist: