Voted long ago but since the comments are list opened for the thread.. I don't mind the idea of supporting beams and cave-ins mechanics.. That being sad, adding something like that definitely needs a rebalance on how to find veins/clusters, and their size/rarity.. No one wants to waste many resources in making a tunnel fully supported by beams, that take a lot more time to set up, just to have a false positive based on how the map cluster has the chance of spawning a ore vein, not actually spawning it