I think at some point, @biminiroad put a skinny module (a disting maybe?) in the 1U slot on it’s side. If I had the time and energy to make my own, I would probably put in some capacative touch plates with gate, cv, and pressure outputs. That peripheral space seems like it’s begging for performative use.
Yeah, there is inevitable disappointment when you get the thing you asked for and it turns out it’s not really what you were seeking. Personally I think, unless you just have a collection, there is an organic process of acquiring and reselling with modular that incrementally gets you closer, but never finished.
At some point you just have to take the leap, knowing that you might end up selling all.