Hi. The stabily changes from a16.4 to a17 made it frustating to mine resources. My idea is to simply increase the sands structural integrity and increase the probability of falling resources block to don't go to limbo. Sometimes it's frustating that you're mining then everything collapses and the resources you were mining are all gone to neverland. I think it would be fair to have 100% or 90% of chances to recover the dropped resources. As for the stability, i think this solves:
Doubled the desert ground and tripled the sand stabilities. However, since there's a mass involded and lots of blocks and materials... well it takes a better care than i gave.
Code:
<set xpath="/materials/material[@id='MDesertGround']/property[@name='stability_glue']/@value">18</set>
<set xpath="/materials/material[@id='Msand']/property[@name='stability_glue']/@value">12</set>