Thinking on that idea a little more, maybe a neat ship weapon/gadget would be some kind of 'gravity hook' or tractor beam - you could grab the nearest ship, or the most massive ship in range, or perhaps target one or more specific craft, and sling them around relative to your craft (or the reverse, depending on which of the tethered craft was more massive). You could use it to fling ships into each other, or as a way to make slingshot-style hairpin turns around enemy craft. You could use other massive objects like space stations and asteroids too, perhaps.