I would request for an optimisation of the search feature. Currently when I search for photo into the phototec, DxO is dynamically suggestif search metadata (like keyword, file name, folder, aperture, etc etc) and is in parallel searching the database for each of this metadata. And, while I add new characters to the search, it update the proposed metadata and start over the parallel search. Unfortunately this usually result in my OS freezing for a while and I need a long (much too long) time just to have enough character in my search request to select to have the correct metadata proposed.
Therefore, I will suggest DxO is not performing the parallel search over all proposed metadata until the user has chosen the metadata he want to search.