To quote Steggs from back in September…
The Boundless servers record a vast collection of metrics and analytics about the different game mechanics, resources and player activity […] It’s understandable for some players to be surprised and disappointed with the recent changes to bomb mining, it was a popular and effective form of mining; but based on the analytics it was also far too overpowered. The ratio of bomb mined resources to hammer mined resource was magnitudes out […] the last thing we want to do is break elements of the game which make it less fun for a significant portion of the playerbase […] We’ll be monitoring the data over the course of the next week, so please do keep bomb mining and let us know how you’ve been getting on - if something needs to be changed, we will take the steps necessary to do so.
“Please do keep bomb mining” was honestly a pretty deep cut/slap in the face after the ability to do so was removed. Still no timeline or roadmap addition to getting this balanced back into the game, but would love to see @olliepurkiss revive this dead horse with a feedback thread for a testing iteration or descriptions of limitations faced before – gross oversimplification – “tweaking a few block armor values”