Well, I've been using FSX for a long while, and after a bit of a hiatus due to collegiate obligations I'm considering starting up a VA project.
The basic idea I have is a low-cost carrier based in California, preferably an airport in the Los Angeles area. Right now it's between LAX and Ontario Int'l as a base. The airline would start off operating city-hopper services within California, with maybe a few services to areas in Nevada or Arizona. I'm thinking that it might start off with a fleet of Embraer jetliners, most likely EMB-170s but maybe 190s. I'm a bit iffy about that, though - I think it might be a bit too ambitious for a start-up airline, though I think California Pacific Airlines is starting off with a similar fleet, and EMBs seem small enough for a startup but big enough for the kinds of LA-Sacramento or LA-San Francisco flights that would probably be the backbone of the airline.
If the airline manages to get somewhat successful, expansion possibilities in other areas of the US (maybe transcontinental service, depending on fleet expansion) and Mexican vacation destinations are natural choices. A provisional name for it is "gocal.com", but a truncated form of that or "flycal" or some other variation of that are also possibilities.
What I think I need is some feedback on the feasibility of this idea. Maybe some advice, maybe some other guidance. It's still very vague, but I really want to try and get this thing going. I think it could actually work.