Builder

There should be a villager that instead of tradeing supplies and items, he trades progress on the village, like buildings and the other villagers. One of the trading options would be buildings, Where you pick the building name in the trading interface, then the villager goes to the area he wants you to build and a gost image of it shows up, whether it be a villager home, or a different already existing building or a building house - like the ones that are already suggested- and once you place all the block, you get your reward (like 5-15 eneralds, enchanted axes, enchanted shovels or iron picks.)