The ability to fly so low over a thatched pub in Kent while waggling my wings that I can see right down that cheeky young barmaids dress...
Oh - alright, at least ground staff - erks running away from aircraft, pulling chocks out, manning AAA. Crash crews and really impressive DMs that stay there for max immersion - so I can see my mate's burning hurricane with an ambulance screaming up while I'm on finals. And ground DM - so if the runway's been bombed it's gonna be a hell of a job getting in...
**All of the above but also a nice size CFS1 style map where u can fly from uk to France etc. Also a way of making the cockpit more interactive like in M$ FS..u know..when u can turn off the magnetos in a spit by clicking on them...if thats poss.
"Wer auf die preussische Fahne schwort, hat nichts mehr, was ihm selber gehort"