iOS devices all have to ability to create playlist on the fly to.
But building playlist without proper ID3 info can get tedious real quick and endless playlist building is not a solution to the problem of quickly populating a queue on a whim.
The classics don't. It is the single feature that has me using a 3rd party firmware.
>endless playlist building is not a solution to the problem of quickly populating a queue on a whim
Of course it isn't, but browsing to a song/artist/album and being able to say "append to end of playlist" or "insert into queue next" are simple operations that are very friendly on a portable device, and once I had the ability to do so I couldn't go back.