Re: Not a new idea ...
"didn't I have the ability to fuel harvest in Elite?"
Not the same thing. Elite just allowed you to harvest fuel and store it until you needed it. This idea is instead a kind of ramjet, where the fuel is scooped straight into the engine and used immediately. It's still not a new idea, since ramjets have been around for a while, but this is the first time the principle has been applied to an ion engine rather than an actual jet.