The main “problem” with Alfred and similar products (in my opinion) is to remember what it can do. Like “opt-space DTD will show me all DT databases” or “opt-space DTF will show me all favorites” etc. It’s a bit like with snippets: They can save a lot of time, but you have to remember what shortcut you have defined for which purpose.
Alfred’s universal actions (which I unfortunately overlooked until yesterday) might help to remember what it can do: select a string/URL, activate universal actions and see what it proposes.
As to DT: There’s of course a better (I suppose you still have the old, Pythonized one) version of it: Self-contained version of Alfred workflow (i.e. without Python) which even allows you to search in a group.