It would be interesting if some EU-based journalist who's had some experience with J-dub policies and records in the past (most likely child abuse) decided to do a story on this and make official press inquiries of the WT.
I doubt most PIMI JWs ever think about how much more personal data the Org really keeps and circulates on members than the average religion.
I'm assuming most faiths might track name of members, what parish/congregation they attend, maybe baptism/wedding dates if the church is involved. Probably not much more than that, unless there are tax issues related to contributions.
Compare that with the JWs: DOB, baptism dates, letters of introduction if moving between congregations, JC notes, notification of judicial action to the Branch, monthly service report data, applications for and letters of recommendation for LDC, Bethel, etc., letters of appointment, emergency contacts, copies of Blood Cards, records/notes on elders who are convention/assembly speakers, etc., etc....
If the WT does have to disclose in writing to each publisher what records they actually keep, why they keep them, and who sees them, that might be rather eye opening to many.