So, what I'm further exploring is granular synthesis.
With that, I used sound samples of a car crash test and glass shattering and pretty much let it give me some random sounds. The only thing I looked out for, were harsh and nasty frequency-bits.

When I had myself some granular synthesized sounds, I simply chopped them up and rearranged them in a way, that it almost had a melody and a more or less distinct rhythm.
I threw in some normally synthesized and distorted sounds to fill in the gaps. I ended up with something that consists of a couple different sounds, but still sounds like one instrument, playing a riff that's vaguely a melody, but not really. Let's call it a pseudo melody.
I was super happy with that. It sounds really big and wild, even with my limited mixing gear.

Add in an dark-ish intro with reversed pianos and little sci-fi synthies, then a purely rhythmical first half of a chorus, and then the pseudo melody really stands out and shines. For the second half, I let the piano play something similar to the pseudo melody. I was really satisfied with the combination of everything together.

I had so much fun making this. So I hope you have fun with this dubstep track, too!