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.

Thank you for the suggestion, I'll add that to the task list.

That would be great. Actually applies to photos too, no watermarks and large previews on mobile version of the site.