Isn't the good news that the market will decide? Low cost will only be attracted to high-traffic routes, and we shall see how many people want a minimum service level on a 6-10 hour flight. Long sectors almost entirely remove the advantages of fast turnrounds. As it is, you can fly transatlantic for a couple of hundred quid if you want to, and that does not leave a lot of room to cut fares further.
The die is cast for short haul, but low cost won't have anywhere near the impact on the long runs. <img src="cool.gif" border="0">