E-2 is extremely good asset, for sure, but I doubt whether it's cost effective compared to operating land based AWACS platform with tanker support, especially when considering that the land based platform can be much larger.
How many AEWC&C/tankers to provide similar coverage to all present concerns? Operating how far from the home base? How much that add up to?
SAM technology has advanced in giant leaps, and not only SAM technology itself but it's networked combat capabilities. Besides, combat power of a fighter lies with it's missiles anyhow.
SAMs: if so effective cancel out everything that flies, regardless from where they take off/launch (land-sea-aircraft), including the AEWC&C, bombers and refueling platforms. At this point probably a need for more EW planes and tankers will arise?
As for short legs, the range of carrier air power is not so much limited by it's aircraft but lacking tanker assets. Adding tankers to carrier wing dramatically cuts number of strike aircraft available.
Can land based tankers only supply fuel to land based planes?
IF the combat aircrafts on the carrier can work temporarily in the tanker roles, there is no need to compromise the number of strike aircrafts on a ship. After all a carrier will not launch all her planes in a single mission.
Land based bombers have lower sortie rate than carrier based planes, but the payload they can carry and the time they can orbit around target is also much longer.
Which combat zone? How long can they stay over a combat zone compared to a smaller strike plane? what bombers do you have in mind? taking off from what place? what amount of maximum payload of a bomber is utilized for random missions?
Sure, ship launched strikes via cruise missiles and tactical ballistic missiles (feasible technically) have their drawbacks, but one has to consider the good side of them, which is the ability to mass the strike and overwhelm enemy defenses.
Well then why have ships at all, just long ranged missiles?
What happens when the missiles run out?
How protected is the Ship?
cruise missiles/TBMs against ground based targets like armored vehicles?
To defend trade properly one needs to convoy ships to defend against sub threat too. To keep fighters for CAP is the least effective option available due to high cost grounds.
Fighters ain't cheap anymore, with price of nine JSF's one can buy good AEGIS ship (KDX-III's cost) which has staying power, sonar and ASW chopper, or two slightly less capable escort ships (FREMM, for example).
Submarine threat is a part of it, so are aerial threats and ships and their combination. Everything that can be a threat will be a threat including sabotage, marine special forces, mines etc. etc. For air defense still a solid role can be played by the planes.
How does that(AEGIS) account for a large number of planes launching some missiles from 250+ kms, in waters far off from home base?
How many sorties can the ASW choppers on a ship provide in a day? how safe are they from threats not visible to the Ships they take off from? How effective is the sonar to threats that are 50 Kms away?
No AEGIS -JSF in the Chinese context.