- Why are the numbers larger than the character glyphs? Feels a bit "preschool", imho.
- What exactly is the "rotary encoder" for? It's a "feature" I haven't seen on keyboards before, and given it extends so prominently... I would be careful with travelling with this device.
- talking about travelling: a built-in battery means I need to charge this thing. I'd personally much rather have a standard 2xAA battery compartment for power cells I can get basically anywhere and not charge my keyboard.
- I love the mechanical slider for selecting BT channels.
- from a design perspective: If you use a serif font for the logo, and none for the key descriptions, this leads to some level of optical chaos. I'd go for one or the other, but not both.