I have been thinking (bad habit).

One of the big problems with guitar saddles is ensuring an absolutely uniform contact between the bottom of the saddle and the bottom of the saddle slot. It gets particularly important if you use an undersaddle pickup.

So why are saddles almost always one-piece? Why is it not universal to have six little sections of saddle (or a six-piece saddle if you prefer that description)so that each will apply its own pressure to the piezo crystals?