Some ideas on how to get those big chiming basslines they use, ways to create a sparse bassline, then ways to create some rollers.
Would involve some work in ANA, in crafting those big siney reese basses. One possible element could be looking at some tracks and look at how they create the sound.
SOmething like that could fill some time, and start to fill a little bit of the whole that is Drum and Bass, which could really do with a few more tutorials, as what there is is killer!