Hmmm, I think all you really need is the hate artist function. (which is an extension of the tweak order that DeadFire mentioned). If you select rock, and decide you don't want to hear the Aardvarks because they come up first every time, you just hold down the artist key for a long press, and it'll skip right to the next artist.

Many people have asked for a "skip album" feature, and this is the best way people have some up with to pretend to skip an album...

Matthew