Have you ever thought how nice a slightly more advanced dynamic playlist creator would be?

A just few suggestions:
    A 'Randomness' bar - 1% being songs which are virtually identical (in artist/album or in tags or both) whereas 100% is completely random
    A 'Favor favorite artists/albums/songs' bar - the greater the percentage the more likely it is that you will get music you like
    A 'Finish in [however many hours]' bar - so you can set the music playing knowing that it will finish by the time your party finishes (to name but one use)

If anyone has more features that they think are lacking in dynamic playlists please say - and hopefully they will be built into Amarok one day.

Sorry, I hadn't found out about the Smart Playlist features which does sort of fulfill some of my recommendations but even then I still can't have a few Beatles songs then some Queen then back to Beatles...
I would still really like to see 'Custom Suggested Songs' as an option.