Standard and pistol is all you really need.
Like said before if you really want to simplify you can buy extras and leave them set for individual caliber loads.
But honestly, it only takes a few minutes to dial in a new charge.
What I'd really like to see hornady make is a medium sized rotor/insert.
Something optimized for say throwing 10-40 grains or so. Should be more accurate for throwing medium loads that fall between the max of the pistol and the max of the large rotor. Just my .02
Hellfire, Doom, Watch the hatred spin
Beyond the speed of sound---
Fire it up, Let the engines roll
It's time to burn it down