I've always wanted to try something with the fuse sides set up like a traditional 3-chine boat hull, but like many ideas I've never gotten around to it.

It might be an improvement (over what?) or it might be a complete disaster introducing a whole new range of problems. Small wings sticking out the top and bottom will probably achieve a better result but would just be too ugly to put on a pattern ship (there's a picture of this floating around somewhere from a US site)

Far better for the schedule makers to get back to designing smooth, graceful patterns instead of the aerodynamically hard patterns they have today. It takes no more pilot skill to fly an integrated half roll around the bottom of a loop than over the top of it but the pilot needs a better plane to do it right. Same with snaps in uplines, no reason to have them there when they can be put in downlines.