As someone who has already upscaled an Odd'l Rockets design (my 12' tall YouBee), I've considered a larger version of the Wedgie. I thought about constructing it from something durable, yet lightweight such as the foam board AstronMike and others use for gliders. Some sort of solid internal frame would probably be required. And, to keep it from landing point-down, I've thought about having it separate near the top rather than use rear ejection. I think that would be more reliable for a larger version.
But, that's about as far as I've gotten with the project - thinkin' about it.
-- Roger