Thank you for reporting this feature enhancement and providing so many details. I agree that the endpoint should be included and this is planned for future support pending stability testing. Based on the information you provided, I filed an internal design change request with the PIM team to prioritize this feature.
Note that the https://feedback.azure.com is the correct forum for feature requests and Microsoft Q&A is only scoped for product questions. If you leave an additional request in feedback.azure.com, the product team will directly reply and prioritize your feedback based on impact, upvotes, scope, and number of requests.
Your request is being tracked internally but I would also recommend leaving feedback in the feedback forum. https://feedback.azure.com/
To get updates about Microsoft Graph beta version updates, you can also check the changelog web site which contains a link to an RSS feed.
https://developer.microsoft.com/en-us/graph/changelog/rss
When you subscribe to the RSS feed you will receive notifications about changes.
Thanks again for sharing your feedback!
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