So...you want to add another sound source to this?
I also tend to make a lot of noisy distorted stuff that isn't necessarily traditional synth sounds, but you need some articulation and modulation in here. A quality filter (100 Grit and Angle Grinder would both work for what you want while still doing filtering, and based on what you have so far they are good picks, but there are others) and an envelope/function generator (the more the merrier – a Mutable Peaks clone might be good for function vs space, but just look around and see what looks good) would go a long way towards making this much more versatile.