First attempt at Dubstep Complextro ... ideas welcome ...

[Dubstep Meister]

I created some Massive bass lines (mostly presets) and put together some interesting complextro sounds, although this is more trial and error rather than a established method...

http://youtu.be/KaLmEcqlSu8

build up and drop start around 1:08

ideas on how to make the complextro better? if I do more variations on the sitar, will that make it more interesting if I stretch this out to 3-4 minutes ?