Having some basic reports available to Adobe Analytics admins showing the top used Dimensions and Metrics. The report would be populated by the existence of a dimension or metric in an Analysis Workspace project. This could help inform Adobe Analytics admins and devs alike on what may need to be cleaned or hidden from the implementation, who to contact if a change is made, etc.
Date and/or days since last used
# of projects where dimension or metric is present
Specific list of projects - could inform who to contact if a change to how data is collected
Project owned by X person, shared with Y people
Last modified by
Top users by dimension or metric
Feel free to add to this list - this is simply a starting point on getting a better handle on an implementation.