Hmm... looks to owe a *lot* to the AmigaOS (A bit like BeOS does), not that that's a bad thing... You may or may not know that there's a project to produce an AmigaOS 3.x clone called aros.
And don't forget, the entire GNU suite, and X windows can run on top of the AmigaOS, in fact they were ported many years ago in a distro called "Geek Gadgets" at ninemoons and on the Aminet - so AROS will have a headstart on many other alternative OSes
BTW, the original AmigaOS is different to the OS that is soon to be released under the Amiga name, which is, in fact, the Tao VM
Between Linux, the BSDs, AROS, Atheos, HURD, EROS, VSTa etc, etc, there's no shortage of alternative Open-Source operating systems. Now if only there was less NIH syndrome among the developers, and if only developers looked at the wealth of open-source code on all these alternative platforms, the best features from each could be taken to make the best OS on earth...