[Elecraft] How can I get more Programmable Macros? (feature request?)

[Harry Yingst via Elecraft]

I would like to have more programmable macro slots:
I'm already using 7 macros so I only have 1 left (unless I'm reading it wrong we only have 8 internal macros). Once you start using rotatable macros they get used up pretty quickly

I plan to add a Genovation Keypad but more Internal to the K3 macros would be useful for rotatable macros.
Is there a way to get more than 8?
Thank you