A special table, maintained automatically by the system, that has 1 row per field, for every form in that app. The columns would be all the items in the "Field Properties" tab.
The admin can view this table, and filter it (such as to show the fields for only 1 form) but of course cannot edit.
This data is of course already stored somewhere in the system, so it would be a matter of surfacing it in a nice list for analysis by the admin.
Or at minimum: offer an on-demand EXPORT of this info -since should be easier to do than a live list or report.
Thank you!
PS: the DS file has this info, but above is needed for better analysis.