feature request (intelligent playlists/last played date)

Couple of feature requests

• Intelligent playlists option - X latest added tracks
• Possible to add a column for 'date last played' in collection/playlists

X latest tracks -  e.g. an intelligent playlist option for 'last 15 tracks added'. i usually add a lot of songs to my collection at a time so to be able to filter down to, say last 15 tracks with genre = deep house, would show me the last 15 deep house songs i added.