Nah I haven't ventured into euro rack yet, I need more affordable, light, small footprint devices 😅 Recently gasnewsletter published a note on my setup, ireplaced the td3 with a microfreak and added the Roland S1 and rubix24 soundcard 👌!
Discussion
Looks like the hapax is your brain sequencer 🔥
Great looking setup.
What is the pi for? 
I'm a huge fan of the norns from monome.
Currently having pi and teensy hiding in my setup.
Thanks for the tip, I didn't know about monomer yet, I've seen the grid controller in videos but never knew what it was. The norns looks pretty good too!
Oh yes the Pi is receiving the same midi as the (drum)sampler, and visualises the midi kick snare and highhats signal in processing on hdmi or the small screen on top of the rig, when im not plugged into HDMI 🙌