\"Add to collection\" from search results

It would be helpful to me if the search results when I search my library had the check boxes and \"Add to collection\" drop down like in my Library. I would also want to be able to refine the search results to include only results that are not in a collection.

I have some 1500 items that are not in a collection, and going through them page by page in \"Not in a collection\" is just not efficient enough, as they can only be sorted by date or title.

It would be nice to be able to sort them by tags somehow, but I guess it might be difficult to find a good solution to that as most items probably have multiple tags.