Aren't "buddy stores" an external stores kit/module?
I find it curious that the USN did not include buddy stores capability (perhaps internal plumbing mod?) in its final JSF requirement. I thought it was in the original, but may be remembering incorrectly.
IIRC, one way to pressurize the external tanks is via a bleed air service line, though there are doubtless other methods.
I wonder if "the KC-10's will always be there" rubbish was bought.
As to V-22 acting as refueler, there is some talk about using V-22 to replace C-2 for C.O.D. mission. Not sure how many pounds of gas a V-22 could carry internally to use in AAR. Don't think it would be very much.