EXPANDED NPC CUSTOMIZATION

Dear mojang, i wanna express my ideas for an "expanded npc customization" like custom skins, especially players. Here me out, within the npc commands, there should be a command that makes it change skins, using the xbox id, like example my id is 100, so using a command and putting your xbox id, the npc(which is a villager model), will change to a player model, and it will import the players skin, if the skins are from a third party, or have a 4d model(custom 3d geometry), which includes the marketplace ones, it should automatically turn to a default skin. Another example is, if a player leaves the game and they went inactive for 5 years, the skin will be a default or a black and pink skin. Another is, if possible, the npc could have the custom 3d geometry, allowing to have a more precise player skin, instead of having the default everywhere. Why this is good? This is a great implementation especially for map makers, because they can have the opportunity to make like roleplay maps, the custom player skins for npc's combined with the npc's dialogue. And also for mod makers, especially horror, like mimic mods.Another is having a new command to guide the npc, like breaking or moving animations, i know this is another topic, but pairing this with custom models of the npc, you could get lots of stuff fom this! I hope mojang understands or gets an idea from this. Sincerely