From the perspective of a user: I believe the idea is nice. But I am concerned about privacy. In this times of deep fakes, authentic voice of someone is a very valuable resource and it needs protection. Of course, you said you protect the privacy of the users and anonymize the data but I believe I need more information in this regard before I can participate. May be an option to automatically delete the voice data after a set period or the option to see all my saved data, delete my data if I decide to do so. Otherwise, it will leave me with some uneasiness.