[quote=@LegendBegins]
The Guild already supports high res image embedding. What prevents using the same concept for profile pictures, and then have the server scale it down, and perform all the necessary alternations (such as the displayed resolution, as you mentioned)? For instance, is there anything that would make it impossible for the server to take these image URls, make the alterations server-wise, as if it were a local file, and display the altered output?
[/quote]

I'm fairly sure the guild doesn't actually store any images, it just points to where an image file is stored (I believe this is how websites work – I don't work on web much (read: the guild is the first real web coding I've done), so I'm not certain on that.) so it can't do anything to the image.