I'm not following that. If it's possible to sketch it, I would be grateful.A rotating assembly with torque tubes is really simple and safe. Routing the cables vertical at the joint and you could do the same thing.
With the "sailplane connection", you can also go for such a push-push pad, simple make it t-shaped, outward on the outboard wing and inboard on the inboard wing and let them slide over theirselves. That avoids the potential for play and thus flutter etc.