For .32 ACP ammo, I'd like to see that case lengthened from 17 to 19 or 20 mm, the case volume increased by about 5 grains of water, and given a stronger powder charge that would push 70 grain bullet at 1200 ft./s from a 3" barrel.
Call it the .32 AutoMagnum or something or .30 Mauser 0r 7.62 Tokerev.
7.62 should be more common in modern guns, but of course, it is a "commie" round, with no patrimony from John Browning.