recently-updated macro to support confluence hierarchy

Hello,

in our confluence installation we have many spaces. One of the big spaces has a fixed tree structure. On certain tree levels we have moderators that are responsible for their area (means for all the pages below a certain page - descendants).
Due to the size of the area a moderator would like to see recently created and updated pages of his area. One of the options would be to use labels, but a lot of people do forget to label their pages and those pages should also be found and reviewed by the moderator.
We would like to have recently-updated macro supporting similar parameters like metadata-report macro: in particular root and pages options (http://confluence.atlassian.com/display/CONFEXT/Metadata+Plugin#MetadataPlugin-Macrokeywords).

Up to now, recently-updated macro is only usable for small spaces with a few edits.

Thanks,
Yuri