> As to how micro-kernel OS' protect memory [...] Its worth the sacrifice as it improves stability.

That's the sacrifice that's supposed to be made for the future, incompatible version of MorphOS (on another ISA, see thread title).

> since we're already contemplating a move that will render MorphOS incompatible,
> why NOT consider some form of memory protection?

Future MorphOS on another ISA is planned to have memory protection. A backport of that version to 64-bit PPC would include all features, including the incompatibility with current MorphOS.