Wandering Miners (New villager for 1.17)

Imagine, exploring the new large caves and encountering a wandering miner, a new mob that would very rarely spawn underground. It would trade you useful items that would help you in your cave journey. It would be similar to the wandering trader, which means that they dont stick around forever and they also act similarly to them

How it would act

The wandering miners are found underground and will be quite rare. The wandering miners occasionally mine blocks next to them that hasnt been placed by a player - similar to how endermens pick up blocks, but instead they break them using a pickaxe - they then pick it up.

The wandering miners when near mobs, wear the mask of that mob, in order to blend in and not get attacked, for example, if a zombie approaches it, the wandering trader will switch to a zombie head so the zombie won't attack it.

The wandering miners sometimes switch to a food and eat it, like bread or carrots.

The reason they should add this mob, is because it would be useful for the players, that is because of The trades

Bucket (quite cheap but can only buy one)

torches

ladders

Mining helmet ( essentially a gold helmate that emits light, that can be crafted by putting a gold helmet and a glowstone in a smithing table) (can only buy one)

depth meter (a new item that displays the Y level and can be crafted using copper ingots and redstone)

Rope (Pretty much scaffolding but only goes up or down and it is slower than scaffolding)

Drops nothing

what r ur thoughts?