Really cool idea!
Let down by some bugs, which you know about. My ship seems to just be shooting all the time, and space bar does nothing.
I don't know if the thrusters actually affect my ship, would like something in the background, like some stars, so I know which direction I'm moving in. Some sound effects (even just 'pew pew pew' would also be good. And some art, even really basic textures or color changes so the pieces of the ship look different.
I would play an expanded and improved version of this, with proper art and different ship components like shields, thicker hull, lasers, tractor beams, etc. to pick up that you have to strategize about.
Overall, I think this is an excellent idea. 5 stars for creativity.