We have begun work on the anonymising of user profiles. If you have anyone that raises this under GDPR before this work is released then please do raise a support ticket with the details.
With New List Edit the Delete warning is already much stronger, however, this specific request has come up in feedback and we plan to address this with clearer messaging about the impact on Digitisations. This is not currently scheduled but we will update as this moves to the top of our priorities.Oliver Johnson commented
Notwithstanding the informing you've referenced will there be usefulness included to caution TADC administrator staff when a digitized bookmark is erased? This is especially significant in order to get these cases early instead of depending on TADC reports and different types of observing.