As a sound and preset designer, I would love to have the ability to have macro knobs on Soundbox which can be mappable to any parameter that modulation can be attached to. This can make presets more powerful and add more expressive capabilities other than the Mod Wheel.
Think similar to Output Arcade, Arturia Analog Lab, Kontakt Play Series, Vital Synth, etc.
I’d introduce a new tab called “Macros” where you can edit macro assignments or else just add them under the modulation section. Assigning a macro can function the same as assinging the current LFOs. If a Macro is assigned to a parameter, then that Macro knob appears over the cover art image and its name can be customized. Unused macro knobs are hidden. 4 macro knobs should be plenty to work with. Macro knobs could receive color customization similar to the rest of the UI when making packs.