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 Titanium Command Rig (8964) - Walmart.com
LEGO 8960 Power Miners Thunder Driller – Bricks and Minifigs Huntsville AL
Lot of 4) Lego Power Miners Minifigures w/ Rock Monster & Crystals 8960 8188 | eBay
LEGO Power Miners Thunder Driller from 2009! set 8960 - YouTube
Lego Power Miners 8960 - Wiertło Górnicze | Mysłowice | Kup teraz na Allegro Lokalnie
Review: 8960 Power Miners ~ Thunder Driller (Photos!) - LEGO Action and Adventure Themes - Eurobricks Forums
LEGO Power Miners 8960 Thunder Driller | LEGO Power Miners 8… | Flickr
Monopoly's Reviews: 8960 Thunder Driller - Community Reviews - The TTV Message Boards
Lego P M # 8960 Tr D (!) €1.63 headpinz.com
User manual Lego Power Miners 8960 (76 pages)
LEGO Power Miners Thunder Driller from 2009! set 8960 - YouTube