Hmmm, so after reading the FAQ and the comments, I don't really see what the advantage here is over just flying one of the major carriers.
Changing the pricing model is useful, but only really for people who cannot predict their schedule enough to get the lower rates from the commercial carriers. It seems to me that people who fall into that class, and yet are willing to subscribe to a few flights a month might not be super common. Particularly once the service starts to fill up, and you can't guarantee a seat at the last minute.
The private terminal thing might be helpful, but frequent travelers are going to have already bribed the government to skip the full security line. Last time I was in SFO the precheck line only took me about 2 minutes. If I had checked in early, and only had carry on luggage, I could probably have gotten to the airport when boarding started and still made my flight (haven't went through LAX security in a few years can't comment there).
So, while the GA/private terminal would be enticing if it were operated like a charter plane (aka no TSA to worry about at all), and the flights were small enough they would be willing to hold it if I was running 5 mins late, but it doesn't appear to be the case. The regional jets are much to large for that kind of behavior, and given that its not a business jet, the seating is going to be as miserable as it is on the larger carriers.
To me it sounds like they are trying to reinvent the SW airlines of the 1970's which operated more like a traditional bus service (lots of frequent flights, last minute ticketing, etc) but without the huge profit margins on tickets that SW was competing against.
So I would expect that to really lure people they need something closer to the full charter experience (business class seating at a minimum). For that, I suspect people might be willing to spring for a few extra dollars (bus class tickets are probably easier to compete with given they still tend to have larger margins). Large corps that like to fly their plebs in economy seats probably aren't going to spring for the extra ticket price (besides getting into the booking system might be challenging).
Anyway, good luck...