Recently, I've been thinking of allowing for a bigger scale profile picture to be permitted. Instead of the scale of 256 that's normally found, it could instead be 512 or 1024, then there could be dynamic serving through a PHP file that would allow for smaller scales of those images, which could be used for the smaller images like the profile pictures found in the User Likes list. These are simply ideas I've had in my head for a while now, and not something I'm fully sure on implementing.