I don't know if you guys have been following the development and sea trials of lazers and rail gun systems, but my take on this is that as time goes on, even small developing and 3rd world countries will acquire this technology, which basically blows the SAM out of the water. And given that your plane cannot be completely invisible unless it simply doesn't interact with the electromagnetic force, which as far as we know, all atomic matter does, overinvestment and reliance on stealth seems foolhardy, and irresponsible in the extreme.
I should make clear that, for the time being, it is still useful and worth pursuing. But as the F35 doesn't look like it will be properly ready for full-scale combat until at least 2020, and, and would likely be slaughtered by the Russians and Chinese, both of which have their share of capable engineers and designers, and are well aware of high frequency radar.
It seems to me that a much more sensible solution would have been to reuse F-22 geometry, and especially produce the conceptual FB-22. The reduced cost of having much of the design already completed, as we as having part commonality with the F-22 would reduce the long-term cost of both airframes, allowing larger numbers to be fielded.
Second, it seems to me that the only responsible move would be to have conventional backup designs for all roles intended to be taken by Gen 6 airframes, should stealth be rendered obsolete. The F-15S/MTD proved to be a highly maneuverable aircraft, and would work as a dedicated air superiority fighter. Similarly modified F-16's and F-18's would also be similarly capable, and at a lower cost than the mate-grey grey monstrosity we're dumping money into.
