Having the watermark totally cover the image in the Tile setting is useless. There needs to be a horizontal and vertical spacing, then it would give very close to what I require.
Be able to continue a sequence of image numbering for a later batch, for example: First batch renamed to ABC001-ABC199, then a later batch ABC200-ABC349 etc.
When Watermarking, have the portrait images automatically rotated correctly, so the watermark is the right way. It would not be good to have to rotate loads of images manually.