This is rather small, but why does the sparrow not speed up while in the air? When it's equipped while falling, you only start moving forward when you hit the ground. This doesn't make sense, since it's doesn't contact the ground. It has a jet. it shouldn't need to be near the ground to move. Also, the engine sounds like it works harder when it's in the air. Again, this doesn't make sense. If anything, it shouldn't be working as hard since the repulsors keeping it floating aren't doing any work.