There should be a place in the User Manual with all Deprecated items listed. Script functions, properties, etc. If there is a replacement that should also be documented here.
This would be very helpful for integrators / programmers who do updates. Then they can more easily search for deprecated items being used in the project and change them to fix the project.
Organize the items by version that they were deprecated in and type of object.
If you agree, please vote for my feedback here: