I for one would really, really, really like to see full backup of all data
to servers outside USA, if necessary with anonymized contributors. A first
step would be to store digests for the revisions on alternate servers, and
make it possible to double check the validity of the content. That is, a
canary for the content.
No I don't think WMF would tamper with the content, but it might not be up
to them to stop it from happening.