The whole idea of the stealth on the aircraft is for a 'first day of war scenario' after that pylons will probably be fitted to give it a better payload anyway, and in the process buggering up the stealth characteristics. Why don't we leave this first day of war sneaky beaky business to the yanks and we can jump in with aircraft with decent payloads (Typhoon) at a later date? Anything can be navalised if you throw enough money at it