The project team was Bill Jacklin, Rob Compton, Mike Nelson in the UK and moi in Oz. We found a lot of material on Larry's computer including all the plans, component drawings and, yes Serge, Larry's highly detailed assembly manual.
Larry's drawings all featured a standard control system. He suggested to me on one occasion that while the Expo-crank worked, it was complex and so very dependent on manufacturing tolerances that each unit required careful hand fitting. If I remember correctly, he said that the tolerance issue made it not commercially viable. Again from memory, I think Larry had some laser cut in plastic—possibly acrylic. If he didn't cut some, he certainly talked about it. Some of the drawings show a conventional bellcrank tilted so that in elevation in the neutral position the bellcrank is at the same angle as the flap pushrod. There are even detailed ribs with the bellcrank support at the angle, but no notes of any value to those of us following behind. The angled bellcrank probably improves the linearity of the controls but by how much over hockey stick flap horns of the correct size for a particular model? I have no idea.
Larry was working on a full fuselage version that he called Mo'Beast and like Jim, it's my preference. There is not a lot of work left to be done to finish the plans for that version but like Mo'Best, it's a complex model and the interest level needs to be high to make it viable.
Working with the drawings, I saw a way to use the same flying surfaces for both models. The trick was to use flaps that fit the full fuselage version and supply fillets long enough to fill the extra space between the flaps and the profile fuselage. A simple straight cut would produce the shorter fillet for the full fuselage version. This would require only a change to the horns and the fuselage to produce both versions.
The only comment I will add to Mike's post is, 'Never say never.'
Given sufficient interest, anything is possible in time.