Sometimes when you have a couple of niche playlists that you want to play all of them as a combo then there could be a way of you selecting the playlists you want to hear together. Sometimes I have a playlist with only a coulple of songs so I dont usually play them and so I end up adding them to a larger playlist therefore they loose the uniqueness. I am not sure about how the logistics of this function could work but I am sure it wouldnt be hard.
Hello and thanks for the feedback!
A similar idea has also been suggested here:
Add your votes and comments there please! ;)