Since this would be something awesome to have in early game as a portable shop, i think a good way to earn currency in others maps would be by in some way link the supply drops to earning hexagons.

Each supply drop would give X amount of hexagons, being a red drops giving you the most.

White - 10
Green - 25
Blue - 50
Purple - 75
Yellow - 100
Red - 250

Would you think that would be possible to mod in the game?