Wow, this is indeed a satisfaction Keyboard 

Got all of the them VERY Satisfying features  

75% layout ( best workstation layout )
V.I.A
Clean design  

OLED Screen ( YEEES ) Layer indication at is best!! 
The Knob ( really nice for timeline scroll in editing software ) + The STD features 
I would not mind paying a premium if the OLED and Knob wheel is executed well. 
+1 ISO enabled PCB ( I don't think it's a "cheeeese plate" just by adding ISO enter and split left shift to the PCB ) 
+1 ISO Didicated plate ( To avoid the universal layouts and ANSI users frustrattion )  

)
Looking at the the knob rotator on the render, is it not slightly a little too big to interfere with print screen on your fingers when "knobing the wheel" ?
On the proto, the OLED is countersunk, any plans for a tinted glass insert?
Really nice work and great features, definitely in, if you add ISO  
