What's a cartridge you'd like to see make a comeback?

.32 Special

Make a run of .35 Remington for all of the guys who own a Marlin 336C and can't find ammo.

Id like to see a few come back;
357 Max
10mm magnum
375 super mag
414 super mag
44 auto mag
445 supermag
45 win mag.
475 linebaugh
...I might enjoy magnum handgun rounds.

I guess some of those were never popular to begin with but i would love to see some/more modern offering in each
.

The .308/40mm

I wouldn't mind a return of the .30 Remington.
A .30-30 rimless just makes sense to me for semi-auto rifles... .