1600x1600 image limit?

I've noticed that there seems to be an image size limit of 1600x1600 here on Blogger.  Specifically because that doom cover was automatically re-sized down to that from 3500x3500

I realize many people probably won't need any album art at 3500x3500 resolution... but I figure why bother making something like this a smaller resolution if you don't have to? In 20 years when we're all using 9600x5400 monitors, people will surely be clamoring for higher resolution album art.

Putting all of that aside, I'm not sure what to do about this.  I'm thinking of switching over to something like Flickr or Imgur and simply posting a link to that full resolution stuff alongside the 1600x1600 version I post here (as this is what many people probably prefer currently).

Let me know what you guys would want.