If you could develop telescoping beams that were as rigid as standard beams, you could more easily breakdown a Tornado. I think that I am finally going to get a tilt trailer this year so that I sail the Tornado more often.
Problem is that you add weight for no real gain as you still have to take the tramp off.
Takes an hour longer to bolt a wide boat together.
IMO, the ultimate 20 footer is:
20 feet long
12-3 feet wide (M20 Vampire 12).
120-140kg (The M20V is 142).
Mainsail 21sqm ish
Jib 6ish
Spi 26-27ish
Curved Plates
T foil Rudders