suggestion - "smart lists"

seeing as how many lists are created in the likes of "german redhaired actors i've got autographs from", i'd like to suggest a feature that would work similar to the smart playlists in iTunes:
- you create a new list and name it
- you select tags you've already set on your items (in my example artists) and would like to use (eg. "thrash metal", "seen live", "usa")
- all items are listed and sorted in a certain way (let's say by name as default; the deluxe version would be to have a setting where you could set your favorite sort criterium, like name, rating etc.)
- you save the list
in my example i'd get a list like 1. Anthrax, 2. Megadeth, 3. Metallica, 4. Slayer, 5. Testament etc. which i could fill up with notes, pictures etc.
what do you think about it?
- you create a new list and name it
- you select tags you've already set on your items (in my example artists) and would like to use (eg. "thrash metal", "seen live", "usa")
- all items are listed and sorted in a certain way (let's say by name as default; the deluxe version would be to have a setting where you could set your favorite sort criterium, like name, rating etc.)
- you save the list
in my example i'd get a list like 1. Anthrax, 2. Megadeth, 3. Metallica, 4. Slayer, 5. Testament etc. which i could fill up with notes, pictures etc.
what do you think about it?