Engines are supposed to be Reactor-Engine hybrids.
Yeah and i dont like it. Especially given how Aurora is based/inspired by Starfire and HH and not Star Wars and in both of these universes reactor and engine are specifically two different things.
Physically, it does make sense since an engine fundamentally doesn't really need the electrical, thermal etc. power it produces - at least in Aurora the general canon seems to be that engine tech is about generating some sort of matter which can be expelled from the engine (rocket-style) to propel the ship, so any electricity or heat generated by that process is not needed for propulsion and is fair game to run the rest of the ship. I suppose this breaks down if you headcanon engines as a gravity drive or similar, but the game can hardly be expected to account for every possible RP universe.
Mechanically, it makes sense not to have a single component that is required to run the entire ship, otherwise one lucky hit in battle would cripple the entire ship and that kind of extreme RNG to determine battle outcome is probably excessive.
