Nah, at some point you decide to go wider or think of alternative feeding systems rather than going higher. That is why I have auxilary hoppers and a Brandt 777 Coin Conveyor system with a big hopper.
If your percentages are low.. just sort more. If your percentages are high.. just sort more.
Wow lum! What's that hold- 4 boxes???? Do you load that thing from an extension ladder? I have 3 hoppers and find it very convenient. Your penny chute looks like it's puking dry lube. Thanks for the picture!