Hey, thanks for the comments and feedback. There was a lot we left on the cutting room floor in order to get a nicely polished game up in time for the jam and ship upgrades was definitely on that list.
I've seen and gotten stuck on some of those small asteroids. We might have to make those a bit bigger.
The strategy of loading up the rear early and running away definitely seems to be the preferred one according to the feedback. We hope to improve the enemy movement system (or at least randomize it a bit) so they aren't as easy to thwart in such a fashion and add a bit more challenge to the game.