I think your missing an issue.. If the wings are fixed you can only have wings that are 0.08 wide. This will take the width to the full 2.5.

If they are folding then yes you can have have the 0.16 wings. BUT if they stop folding you're illegal. I wonder if they stop folding in a race what happens?? Yes you started legally but you sailed illegally so guess disqualified??

As I see it your still only 2.5 meters from the point of lateral resistance.. So the difference standing on a gunwale or standing on a beam is?? What you suggesting is why not make your hulls 0.6 cm apart and only use wings.. Your thinking would suggest this is the fastest config? Tried this on an 18 and swum lots..
So Im still missing the advantage... just dumb I guess..