The only truly viable way forward is a new modern platform, with a user experience based around what we recognize as Amiga. This means throwing away compatibility with legacy sodtware, but it also means opportunities to reimplement old software concepts in a modern setting. And porting software from other platforms, and getting software support from outside of "amiga land" would also be much easier.
that is pretty vague...
ok we have AmigaOS and MorphOS that aim at the moment to be binary compatible then we have Aros that is source compatible. From first SMP experimenting it is clear that SMP is not possible to integrate without API changes. I do not know how far development is. "Silly SMP" (the experimenting with SMP) is stopped, on ARIX it seems to be still in development.
How compares your ideas with what is available. And if it breaks everything and no software from Amiga compileable to it why not using f.e. Linux?