3646, 6152 and 6154 were Rolex cases...
Not a rectangular one, but a nice round one, why not? An elegant case which coudl house elegant complications, in an italian way...
Or why not, ala Rolex, elegant, functional, fundamental... But with a smaller and nicely designed case.
They have to keep the Luminor and the Radiomir case, but they have to launch a new and smaller case, which won't be contradictory with new complications.
IMO...
Best,
Nicolas