A10s operating from short strips? Seem to remember that one was stuck for over a week after diverting in while Harriers continued to operate unhindered from a very short piece of poor quality tarmac.
B52's as the ideal CAS weapon? Granted carry a large number of JDAMs but remember JDAM only goes to a fixed position - what happens when the weather gets bad and you need a low level option to take out mobile targets such as manoeuvring troops and vehicles? Give me a combo of EPW and some of the older weapons which point and shoot to cover all the bases. Incidentally give me a mixture of US and Brit systems and you have pretty much all of the methods of attack you need - exactly as they are operating today to great effect.