Because AuReiNAND doesn't have ARM11 support yet, and cannot do things such as region free until it does. Aurora wants to learn more about ARM11 before implementing such a feature.
Ah, okay, I see. Just thought about that, because this System Menu "patch" seemd so simple, yet powerful.
Did I understant that right, that the CFW just isnt able to patch the System Menu by itself yet? :-)