For dark industrial techno, you need super modulation and the best all in one module: IME Kermit MK3!
That module can be LFOs, EGs, dirty oscillators, S&H, noise generator and combine them as you like. True modulation gem for your style. Here is what you can with it:
I also recommend looking at the IME/Harvestman Double Andore it has dual VCA plus lots of tricks for techno and envelopes in one. I may pick one up along with Piston Honda MK3 or Hertz Donut MK3 to go with Kermit and Bionic Lester. I would ditch the Erica Synths modules and use an external drum machine or perhaps just get the smaller Erica Synths sample drums and save rack space and cash. I use my Elektron Octatrack for samples and drums and it works great.