@Wawa
When Toni was still working on the Kickstart replacement bounty, I did ask him. He said that he wasn't interested in a revival of the Amiga platform but just a legal way to use his emulator without paying for a ROM image.
The more I think about it, a modular set of libraries to replace Graphics.library might be a better approach and Copper.library might not be such a bad idea if it were made backward compatible to AmigaOS 3.