Good game, hard to believe it runs on my toaster.
I would suggest a prestige upgrade that let you know each purchase requirements, even after a handful of run, it's unclear what trigger which unlock.
I would also suggest a vacuum upgrade for the maw. At some point the gold input is soft capped by the volume brought by each dwarf and spill right of it.
I've been thinking about this a lot, whether it's more fun/interesting if the player has to figure out the unlock conditions, instead of the game just telling you everything. Both approaches have various pros and cons. Perhaps a prestige upgrade telling you the requirements is a good solution. Would have to rework the GUI though, since atm you can't even hover over the hidden/locked upgrades/buttons.
I kinda like the chaos of many runners depositing ores hehe, but I actually have plans regarding a late game upgrade that makes the maw suck/vacuum in nearby ore. Another option would be to simply make them throw ore further. I'll also be adding a few rituals that collect ore, as well as couple new retrieval units, so that should help a bit too.
Thanks for feedback!
