Is there even a reason we should be using the image-rendering-crisp class if it's not setting crisp rendering?

I do not think so but that would require more work that I did not want to do if this was not going to be accepted

Of course we'll accept good work! Half-done work, not so much, though ;-)

Ok, if you and Fsiddi think this is a good change I will modify the other repos that use the class.

I don't know if it's a good change, and I can't talk for the other guys. At least we should get @venomgfx's opinion, since he's the CSS master.