Increase the max product image size allowance to at least 1024 x 1024. There are several reasons for this. Such as the current larger monitor screen sizes and the resolution sizes on those monitors that most people at home have these days vs the previous quantity of smaller screened but bulky CRT monitors of the past from 15-20 years ago.

Another reason is because it gives store owners more to work with on ratios when designing their product images. Plus since the marketplace is using responsive design, having the increased max image allowance won't negate from smaller screens since the images already currently resize for those resolutions.

Then there is the fact that depending upon the product, the current size limitations don't always show the product in it's full scope and clarity.