I feel like the controls should probably be relative to the camera.
When I played with un-inverted camera it felt unnatural(so inverted, to me), I think your settings are flipped. I always play without invertion but I left it on in this game.
it felt like small bits were too far apart so I quit before I could grab anything but bolts. I thought about skill based maneuvers where you have a level with asteroids you can bounce off to create an optimal trajectory and then grab the small bits very fast this way. much faster than without bouncing to change course. to balance it you could lose some bits on every bounce, if needed.