I wish Canon would update the 50 f 1.4.
+1 Couldn't agree more. That "micro" USM has to go.
If they changed the focus mechanism, it would become too much like the 1.2.
IMHO, the lenses would still significantly differ, e.g.
* The f/1.2 has metal body with weather sealing, where the f/1.4 has plastic body with no weather sealing.
* The f/1.2 has 8 circular aperture blades, while the f/1.4 has 7 straight blades.
* The f/1.2 has an aspherical element, the f/1.4 has none.