Minecraft Forums

They could make a website or program used to make a skin. Then when the player is done, he/she will sent it to them along with their gamertag( or anything they need to sent them the DLC(will be explained later)) then the skin can be sent to a department or program that decides if the skin will have any legal issues. Then they can send it back to the creator( if it passes) as DLC or they can send gem a code( like Microsoft points) so the player can use the skin in game. The skins the player has made will be under custom skins in the change skin option.

They could make the mods be DLC and when you download one, it will not be in effect at first. When the player clicks play game on the main menu, they will be sent to folders instead of their worlds. Each folder has mods in them. The player can create a new folder anytime. When he/she creates it, he/she will select the mods he/she wants into their world. After they create the folder any world made In that folder will have the selected mods.