Most often, when I save a sliced document, I only care about certain slices. It would be really nice to be able to save only the slices I care about enough to name.
The document I'm working on today has 25 named, layer-based slices (buttons) which I'm exporting in four different states. Being able to export only the named slices would spare me the tedium either of selecting 25 slices each time I export, or of waiting for and then deleting a slew of unneeded slices.
Or maybe just give a text box that behaves like a simple search engine, allowing AND (+), OR (^) and NOT (-) operations, along with asterisks (*) as wildcards.
NOT "Layer *"
And it would give you a preview as you type in the text box, showing which slices apply to this search term.
This would also produce the same result.