I think it'd need too many steps. People want just make screenshots, or take real pictures and just share them.
In XXI century where gaming world mostly exist in high-tech lands (Europa, America, Asia, Australia), internet connection, bandwidth is quite enough for smooth experience even for large images.
Personally I think more problems with large images eating my RAM, where after while my system is frozen due to no any memory left.
Once I opened Military screenshot thread, Firefox ate 2 GB of RAM, almost everything.
I had to reset system lol.