UI is a great place NOT to reinvent things that don't need to be reinvented. Rip off the best and forget the rest.

Whether OnShape is the "best" or not, I have no idea, but the point stands.

that was the idea and this is such a huge project that I kept as much variables static as possible. I want the app to feel close to what people already know - and that applies to me as a user too (I want to use the app too after all!)