If chests are implemented I will probably put all rocks, stones, dirt, etc. there because I have a lot of those things and they aren’t that exciting to show off.
Also, on the subject of inventory/storage management. While I like that shift-clicking an item/stack will place it in an open slot, I would love to see a similar implementation as in minecraft (maybe shift-ctrl-click?). Where it attempts to sort the stuff into existing stacks before moving it into an open slot. This idea would probably only work well if you could add a whitelist filters to the storage blocks telling exactly which items are allowed. That way you could have a chest dedicated to metamorphic rock/stone, then just modifier-click on all rock- and stone-smartstacks to sort them in.