We're often in the process of removing deprecated fields, in doing so we check the field usage to learn about what clients use what deprecated fields. Currently one of our limitations is that the list of operations is rather big, trying to figure out what client uses the deprecated field means we'd need to open each of the operations to go to the dedicated page. This is a quite a tedious process, if there was a way to filter on this page by client (and perhaps even get client version in there somehow) it would greatly improve usability for us!
(marked in red is the suggested addition)
Let me know if you need more info!