Another thought (and I'm certainly no expert so please correct me if I'm wrong) is that the 3/4 bridge (like many German watches) creates strength and stability for the movement.
It’s basically a sandwich of chronograph levers that is oiled with a fire hose.
I need a watch with a display back, but which one, at the moment my thoughts are a Speedy sandwich as you get a great movement to look at but what else to consider?