[Perfectlap]

Meaning once the top is down the rear trunk is not accessible without fiddling with the top again.
You have to partially raise the top assembly to allow the rear trunk enough room to clear.

yes, as one piece, the rear deck lid on the Sypder would not work if you want to avoid getting out the car.

I would have brought back the clam shell (incorporating the humps) and worked out a way to lift the clam shell via a manual lever from inside the car that would lift it just enough to allow space so that the manual top could be raised.
The manual top could have been made of very light weight materials on a smooth ball-bearing track. No electronics or motors.