I am sure that you are a highly skilled and talented programmer and the PC world is very lucky to have you, but the die-hard amiga user asks, "how will a 3d GUI improve the core functionality of a program", it won't, it just looks pretty and wastes processor and GPU time.
The Amiga should give users what they need, rather than gimmicks to sell "improved" versions of software they may already have.
You have painted yourself into a corner here as I tried to look at your samples, but Firefox would not display it, obviously I don't have some vital plug-in, relying on microsoft products may result in lack of choice of third party products, but I don't want to worry about that I want an operating system that just does what I want without quibble, maybe that's not AmigaOS now, but it could be, in the future, if skilled and talented programmers were to donate some of their spare time to it.