Any thoughts on possibly allowing off-site image hosting for situations like this? In the vast majority of cases it can probably be worked around, but I was just wondering if you'd considered it.
For layout images, no we won't have this. By hosting the files ourselves we ensure that they will never go down and break the page, and people follow the size requirements to help prevent negative impact to page loading. (In this example, having a 30mb image load every time someone loads the page is very excessive, so I think the rules about size are doing their job)