Idea for calculating martingale entry position

Hi, It's crossed my mind, that, what if Martingale layers position can also be calculated by distance from the average price, instead of only from the last position. 
This way, the EA could benefit from position that are beneficial to improve the overall position, eventhough probably the price level are not yet better than the last layer. 

Then the new martingale layers could improve the overall position for better averaging the price.