I agree on the save on quit - even if it immediately deleted the save after loading, it's important for a game to have a "quick exit" option when real life calls.
I also would like to see a change in the way the "companions can die" element is handled on Supernova - give them a bleed-out timer, or, since their corpse seems to be persistent, let us heft them on our shoulders and slow-walk our way back to the ship to use the magic of technology to bring them back, maybe at a hefty cost. An incentive to keep them alive, and guard them during combat, but not just a "sigh - Havarti just ran up to another group of Primals while I was running away and started swinging, time to reload" sort of deal.