Title says it. Just use the existing knobs and buttons to allow setting delay time, feedback, reverb settings, etc on the unit itself without requiring the app. And of course to save those settings. Also a way to copy a preset from one of the 4 slots to another slot so that you can just change the capture in the new preset and save that. One more - a way to save the level of captures on the Nano because as is, some captures are much louder/softer and you have to keep adjusting the preset volume to compensate.
Ah… See now that you can adjust the capture level by holding the capture button down for 2 seconds and then setting the level with the level knob. Then you can save that capture level with the preset. I assume that if you change the preset it’ll maintain that level so you’ll have to adjust it again. But at least you can have consistent levels across your presets. I think this should have been mentioned much earlier with the description of gain and volume because it’s a critical setting, but that’s just me…