It would be useful to be able to turn off the site's "watermark" option on vector uploads and instead opt for a custom watermark, like Stock submitter already offers for video submissions. The reason being that there doesn't seem to be watermarks by default on mobile even with watermarks requested.
I know we can create custom individual watermarks for each preview/ upload at the moment but that is far too time consuming. Being able to upload one watermark and have it automatically applied to any jpeg previews generated would be ideal.