Pretty cool concept. The seismic laser concept is made well though it doesn't play as much of a role as it could. I was halfway through my playtime before i realized it was even a thing.
Perhaps making the map stretch out horizontally to let the seismic lasers cover a wider area, and therefore, you'd have to rely on it more to find where the oil is among the bigger map, would help. You could also dabble in making a story mode with handcrafted levels. I can think of a story boss chasing you as you try to find the oil to heal to be fun in this game.