The ability to upload custom skins- ( For people on Bedrock, Xbox.)

It doesn't necessarily have to be via file: What if there was an alternative? I'm not sure if this would work, but... Perhaps, where the skin section is, there could be something where you input a link to a mc skin from somewhere in the internet, and it pops up, and you could confirm. I feel like that would be awesome, as you wouldn't really have to worry about getting good file-related apps, or have trouble with downloads.