What does "softer" mean? You want it to react later, and be more gradual to get back to target speed (so you want to still be ABOVE set speed as you approach the ball?) "A" settings are generally considered to be the softest (I think...?) but A allows the largest speed fluctuation. You slow down the boat, but it has to compensate to accomplish the correct average, so a larger speed variation from slowest to fastest. More correction throttle (3) will get back to set speed sooner, but may feel harder, less correction keeps boat speed higher closer to the next ball. Or, are you wanting the boat to know you got in trouble going from 2-3, so give you more time 2-3 but then make up that time from 4-5 or 5-6 after you caught up? C1 seems to have the lease effect (doesn't slow much, then makes that little correction the slowest/gentlest)....but hardly anyone uses C1 (or any of the Cs really.)
There's already 9 pull settings (plus the plus settings.) How many do we need? Should they add more? I guess one potential is that since the Cs are little used, maybe they could move the whole scale down so Bs become Cs, As become Bs, then the As allow an even later reaction (larger speed fluctuations....?) Of course then everyone needs an update.