I think I am with the majority here. Who cares about missing points or empty binding--except those pesky quilt police--but a wrongly placed block or wrong coloured piece--that is a whole nother story and I absolutely would want to know while there is a chance to fix it. A politely worded PM would be my way of sharing the info with the maker and then it is up to the maker to rectify or consider it a 'design decision'.