I just coded this for Mekanism v8:
It's basically a cool looking way for you to visually see your Digital Miner's range. It updates whenever you change the values in it's configuration, too.
I've also added "Fuzzy Mode" to the ItemStack Filter, which when active forces the Digital Miner to ignore metadata values on that specific filter:
Finally, I implemented two feature requests that I saw pop up recently regarding filters; the first being a setting to force the Miner to not operate until it has a valid replace block, and the second being filter-specific replace blocks. I decided to just make the "require replace" setting be filter-based, too:
It will still pull the necessary replace block out of the connected top inventory. There are some balancing ideas up in the air for this release too, hopefully these additions will make up for them