Tony Weiler -
The design on the Castle Stuart clubhouse has been discussed here on prior threads. The basic theme of the design is to capture the "art deco" era of the 1920's-30's. The clubhouse at Royal Birkdale is from that era. The views from the clubhouse are spectacular.
Niall -
My guess is Kingsbarns is higher up on the list for possible Open sights than Castle Stuart, especially at this point. Frankly, I wonder if either of us will live long enough to see a different or new course introduced into the Open rota.
Regarding the fitness of Castle Stuart as a championship test, I think the course might be stronger than you think, especially when played from the way back tees. I found the green complexes demanding. As we have seen in recent Opens, fairway bunkers have been rendered more or less irrelevant as most players now can blow the ball by them, so the lack of them at Castle Stuart is not a big deal. Having 6 greens perched on the edge of the Moray Firth certainly would make spectating on the course difficult. As with any seaside/links course, the wind and the weather will have a big impact on scoring.
DT