Many people have suggested that the next step for Virgin Galactic after single point "space tourism" flights begin would be passenger suborbital flights, providing travel times many times faster than even the Concorde.
If they flew up to perhaps 30 miles, instead around 60 miles, much more of the rocket energy could be devoted to moving Spaceship 2 downrange.
If the Knight carrier aircraft flew straight towards the destination, how many miles would it travel before it reached the 50,000 foot drop altitude?
Then, on a flatter trajectory, how much further would Spaceship 2 go? How far could it glide after re-entry?
Not to rush things too much, but a "pilot scale" point to point flight from the Spaceport in New Mexico to California might be a good starting point. Would it be possible?