Rapid Block Placement Counter

For those that like building large structures, you may struggle to count the amount of blocks you place in a long row. my idea was just adding a small box under your crosshair (top center of the screen on Pocket Edition) that tells you how many blocks you spam in a line so you don't have to count them. Currently in the game, you can hold your right mouse button while moving which allows you to rapidly place blocks, so this feature would be extra convenient (this idea was initially for creative mode). and maybe as you place the blocks in a row, the block row highlights itself to indicate it's counting.