Board Thread:Suggestions forum/@comment-30575462-20161130004558/@comment-26122855-20161201032108

Very interesting idea, though sounds hard to code. Then again endermen can place blocks but in this case you're trying to get them to place blocks in a specific way. Difficult AI coding but I think it could be possible. Give the npc building spawn properties or something. Would be a nice thing for survival if you're trying to build a large city.