I saw u/secretagentsnail's LEGO DRG concept, so I wanted to chime in with a comparison to the LEGO Power Miners sets. I think taking inspiration from these sets could help improve the
LEGO Power Miners: Thunder Driller (8960) for sale online | eBay
Instruction Book Only For LEGO POWER MINERS Thunder Driller 8960 | eBay
2009 LEGO 8960 Power Miners Thunder Driller INSTRUCTION MANUAL ONLY | eBay
Thunder Driller 8960 - LEGO® Power Miners - Building Instructions - Customer Service - LEGO.com US
Thunder Driller - LEGO set #8960-1 (Building Sets > Power Miners)
Custom Lego power miners thunder locomotive : r/lego
LEGO 8960 Thunder Driller Set Parts Inventory and Instructions - LEGO Reference Guide