Andrei,
Can you give us an idea of exactly where the playlist creation feature actually does sit in your list of priorities? And roughly when you would hope to deliver it? I know you can't be definite in regard to timings, but a clue would be extremely helpful! If you're not serious about it, or if there is a major problem in development, I would love to know. Because I don't want to do loads of work on my collection twice...