There's another problem. Thanks to the help of @Wei-ern_520, I was able to get a sprite large enough for my game, however, everything is way too blurry. I know this might be hard to implement, but it would still be nice to have the quality stay the same when sprites are scaled up.

No support, this would be too difficult for the scratch team to do, it's not as simple as you think. They would have to create a working AI in JavaScript that can detect each and every pixel's color, and figure out a good solution for the spaces that have none, and not to mention that if it doesn't work, there's no other solution.