My thoughts....


Quite frankly, everyone would buy it.  All of the people who like to fly modern airliners would love the systems of the Raptor, and all of the people who like older aircraft generally like fighters, so they would get this simply because it's a fighter, albeit a new one.  Additionally, there are simply NO F-22's on the market which are really satisfactory.  It's a niche no one has filled, and Captain Sim could be the first.

Between the F-22 and F-35- I think the F-22 is the better option.  Unless I'm very much mistaken, the Raptor doesn't have actual VTOL capabilities.  So, it would be easier to programme but no less appealing.

The Systems programming wouldn't have to be ridiculously  complex...  Take the another company F-16.  It's a great plane, and I'm sure they had pretty close to full access to the real aircraft.  However, I suppose the gov would be more particular about letting people see the Raptor's systems.  However, Captain Sim could still make a better addon simply by adding full lighting control, and even some of the less-advanced systems that another company left out.  

I think it's really possible.  Captain Sim, if the community generated enough interest for a Captain Sim F-22, would you consider making it?  I'm sure I could get Nels over at FlightSim.com to post a poll asking if people would be interested in this :)