Mining delay between two different type of blocks

It might seem a little nitpicky, but in my world, I have a haste 2 beacon, which means stone is instantly mineable. I find myself mining rails that are put over stone very often, but breaking the stone underneath instead. It would be great if there was a delay between the breaking of the rail and stone, something like .2 seconds.

Now, what about mining at Y=15, where there are a lot of decorative blocks? I think that when you switch between different groups of blocks, for example, from stones to rails, then a countdown should be activated.

It's really a small thing, but sometimes it can drive me absolutely nuts