A mob for people who cant use commands

So I myself can build but it takes me forever and i don't know how to use building commands so what i think should be added is a mob that could help players build like you could add a programing  block that you could use to program this mob so that like you could: set how many blocks you want them to build or there could be a programing tool that could if hovered over a block or a wall like what if you could advance the range of blocks instead of one you could have them build a whole wall so i think this would be really useful for players who don't know how to use commands to make big walls and things like that