This is the best game ever! Ship it!
This is feeling like a game I saw. A rogue-like where you use up fuel to get further away from the center of the world which gets you better resources to get more total fuel. You could go that way.
But what I found was quite fun about this, was breaking asteroids apart until they were small enough for me to potentially move around and manipulate with my ship. Like herding asteroids. Which is quite different from most asteroid-like games where asteroids are the enemy and kill you when you touch them.
Digging tunnels through them at high speed is fun too.
And the way that the "points" revolve around you is quite fun. I wonder if that could be taken advantage of.