I Think if a user is asking for deletion for one or two image's with
good reassons the image can be deleted. But without very good reasson
the image should stay.
for the second part. If a user ask to remove all image's because he is
not the maker. We should block the user for ever. But he released the
image's under a licence. He is the one getting in trouble not wmf. The
image should be kept when they are used.
Houdoe,
Huib Also now as SterkeBak