Some additional suggestions on the designer as it evolves:
1. It would be really helpful to make it even easier to change the way values are displayed on the tooltips for sliders/knobs, so that as well as percentage you could specify other ranges like notes and ideally also custom items when using for e.g. waveform selection, voltage range selection (such as 1V, 2V, 5V, 10V).
2. It would be also great to have the surrounding skin able to automatically pick up on the values (although this might need a lot of custom options) to display numbers around the dial/along the slider.
3. In the same way, It was also be great to be able to have further options on the digital counter - [ADDED 20JAN19] including supporting decimal places (which is really challenging currently with the spacing of numbers on the display) [END EDIT] and, for example, displaying midi note values (would need to show # at least for "black notes") and also some other useful symbols like ±.