This would be exactly my use-case for this kind of keyboard, and it does seem counterproductive having a low-profile keyboard with a whopping rotary encoder sticking out of it. I like SouthPawEngineer's use of scroll encoders, which might be more low-profile: https://www.reddit.com/r/ErgoMechKeyboards/comments/nwye70/g...
I concur, as the keyboard spun over I was like wow, that's an amazing travel mechanical keyboard, then the encoder stopped that idea. It is a remarkable looking device though, I really appreciate the care put into it's design. I feel like the most enthusiastic market for that kind of slim design is definitely portable users, so perhaps there's an easy way to have two models by making the encoder optional.
My only other hopefully constructive criticism is without feet to raise the angle, some people might find it uncomfortable. However it's possible that being so slim and low actually makes the tilt angle less of an issue, I'm not sure!
I think the rotary knob is cool, despite not having a use for it myself at the moment (I could probably think of one). Is it possible to just reduce the height? Maybe make the knob interchangeable?