Brennan - I love the Blacklist - it keeps shuffle-play from deciding to play a Scottish Bagpipe march in the middle of things. It is a bit awkward tho - I have to add a Christmas album to the Christmas playlist and then to the Blacklist.
It would be easier to have each playlist have an attribute box that blacklisted that playlist. That would also solve the request for multiple blacklists. You would still want the Blacklist playlist to dump unwanted single tracks to.
Love the B2!