First of al, it looks like a nice project. It is a shame that a ortho-layout isn’t supported, but I can understand why. The LED module seems pretty neat, and I assume making your own stencils wouldn’t be that hard if you wanted to. The bottom looks clean but elegant. There are, however, some small details to note and some suggestions, not sure if any of them are helpful or even feasible.
1. The knob seems to be inspired from TE TX-6, which is pretty cool. However, the accent colour seems a bit reddish in the renders, whilst TE consistently uses the same palette of colours and design across all their new products. In this case a poppy/brighter orange maybe that could be used? At least for the silver/white model. There is also no knurling, that could help to better rotate the knob, especially since it is sideways.
2. The dot and cross on the TE OP-1 was originally used as a mic and VOL/Battery indicator, respectively. However, we don’t seem have any functionality that uses that. The vertical line of the cross of OP-1 also goes all the way through and has a bit thinner horizontal line. Maybe it is intentional or a bit unlucky, but because the knob is right there on the side, it kind of gives the impression that rotating the knob up will lower something, whilst the the opposite for going down, especially since it look like a plus, which seems a bit counter-intuitive, but honestly that could just be me. Maybe a TE TX-6 style 1 to 5 dot-style volume indicators can be used, or just a short vertical line and a longer vertical line. This will however make the bottom seem a bit empty and imbalanced, so I am not sure if it even fits with the holistic design. Maybe something can be engraved there?
3. In the FAQ it was stated that the aim is for 10 colours. Maybe it would be better to focus on 2 to max 5 killer combinations and palettes. Because I can imagine that not all the colors would be equally popular.
Lastly, a few question, are the knob and LED programmable? And it is stated to have QMK and VIA support, is that also for VIAL? Are there any upcoming/planned reviews on the keyboard?