The 1.4 update and the ore price balance changes have staggered the gameplay in many aspects. The auto-drill is a great concept where the game progress' own linear system can be automated, but it also breaks the later stages of game progression. instead of being able to go ham at tier 7 ores at varying paces, the endgame length has been increased for the sake of sell price adjustments. It needs either a subsidizing "quest" system where it generates a quest for specific ores at the player's equipment progress/amount for the correct quest payment, or, it could be reverted back to plausible sell prices.