The Smart Cached playlist

Currently, the app stores many frequently played songs in its Smart Cache. It would be great to be able to take advantage of this feature by allowing a playlist to access the cached songs for offline playback.
I've experienced this on several trips, where I've been in an area without a mobile network and haven't been able to listen to music. In those situations, it would be helpful to have an "Offline Playlist" or "Smart Cache Playlist" to play the songs stored in the app's cache. Since they're taking up space on my phone, I'd like to be able to play them even without a connection.
I hope you'll consider implementing this new feature for all Deezer users. It would be a huge help, and I don't think it would require much work. Thank you.