Well Qmarx's dwarf used his pick to pierce the earth, and even though he wasn't using his drill to pierce the heavens, its still pretty appropriate.
It's pretty much the exact opposite of Gurren Lagann.
This pick is the pick that has already pierced the hells.
But, yeah. A Gurren Lagann mod would involve the following changes:
Gen a world with trees dramatically less prevalent, and deserts everywhere.
Rename elves "beast men", and give them some positive damblock.
Give them a new metal for armor called Ganmenium, which is dramatically better than all others. Remove all weapons from their civ except spears, maces (which are renamed robotic fists), and crossbows (which are renamed machine guns).
Remove all weapons from dwarves except picks. Move the damage up by 30, and rename them "drills".
A Ganmenium drill will pierce just about anything, especially if equipped by a legendary miner who's never seen combat before.