for instance, if we thinking layout along the DocManager module, with tabs for each category MM can help, Tabs,Fields Rename,Widgets,Sections etc.
so In the ’Tab’ page user can add new tabs and choose from a list of available TVs which TV goes in which tab.
In the Fields Tab user can see the default documents fields and rename them, and enable/disable visibility.
and so on...
Personally I mostly use MM for adding new tabs assigned to specific Templates with my on TVs which I use on the site.
that wish is gotta sound vague unless I translate each of ManagerManger possibilities from line of code to input fields and ajax drag N drops.
IMHO, the one who coded ManagerManager add a very important feature for the back-end of modx, but many users a little intimidated by the coding practice even though its simply copy/paste, and maybe modx does not target that audience, still I think it can compliment modx a lot if the results of ManagerManger rules file could be achieved easly like in the case of DocManager for example.
i think I could have explained myself better if I drew you a photoshop draft