Jiri,
I have to agree with extrands and rgward.
This requirement is popular. Having this capability in NCM would be beneficial as rgward stated it would really make NCM command scripts more robust and powerful.
I agree with extrands comment: "..and for non-global configuration changes, I'm not seeing the value in having it"..
I have had numerous times where I needed NCM to be more granular in its capabilities. To be able to apply logic with 'scripting', especially with interfaces.
extrands, if you find a good product could you drop a note? please and thank you.