X-Plane is boring and the interface makes no sense. The boring part is not it's fault... any flight sim without combat is yawn. Flying real planes in real life is always fun, but flying boeings around is boooooring.
Maybe Il2 and Lock On do not conform to your personal definition of "realistic"... I'm sure piloting a Cessna is just like flying combat missions on a Corsair or a MiG-29 <jk>. But the games are fun. F-U-N. and several orders of magnitude more COMPLEX then most non-obscure space sims. BTW, Falcon 4.0 is a nice game too. Pitty that you have 30402 fan made patches that make it totally impossible to learn to fly the damn game if you install any of them.
I generally like all sorts of combat flight sims. Even silly stuff like F-22 Lightining III from Novalogic has its charms. If the flight sim community had less rabid fanboys who automatically hate all other games, I'm sure we'd have a lot more flight sims to play today.
Back to WC: the closest to "realistic" we got in any space sim was I-war. And loads of people hated it. I really don't know why, it's no WC but it's pretty challenging and fun. Maybe a WC game with newtonian physics where you got to command a Venture or a Sheffied would have been cool.
People are strange sometimes... In wc communities people used to hate all games that were similiar to WC because they were rip-offs of WC, and hated all games that weren't similar to WC because WC is the best and any other concept of space sim sucks.
I'm NOT refering to this forum nor to its regulars, BTW. It was just the general attitude we got back in the day when Space sims were actually popular.