Calculator concept inspired by Naoto Fukasawa | dailyUI 004

Heeello! Here's my design for the daily UI 004. This design is inspired by the calculator design of PlusMinusZero which is a Industrial Design Brand by Naoto Fukasawa.

Combing with the lately neuromorphic design trend, I created this concept! Personally I really love the trend as it strike for a balance between 3d and flat design, which also allows my knowledge from industrial design to apply. However, the usability of neuromorphic design actually stay questionable for me, as I seen live site with neuromorphic, yet it is somewhat a disaster.

What is your opinion on this design of mine? Any obvious mistakes I might make and I would like to hear for your advice! Thank you!