Explain the problem as you see it
Some of my supertax's have very many fields and I reference their values in different situations. Which means in most situations I don't need to see the field values, so I hide most, if not all, fields most/all the time.
On the situations where I'd like to see the value of a hidden field, in many cases just seeing the name of the value's node is enough (meaning if the value is a supertag with its own fields, I usually get enough meaning from its name and don't have to expand the node.)
As of now, if I want to see the value, I have to click the hidden field and then move my eyes to the place where it unhid to. And then once I've glanced at the value I need to re-hide the field to get it out of my way. Which usually means hiding all fields and then re-unhiding the ones I want to work with.
Why is this a problem for you?
Honestly it's not a huge problem and more of an inconvenience. However, it does sometimes take me out of flow and seems like unnecessary fiddling with the UI to get my work done.
Suggest a solution
Provide a tool tip or other similar popup UI element that previews the name of the value's node when you hover over a hidden field.
I suppose if there are multiple values, then display them each on their own line.
I suppose if there's a large number of values, then maybe allow scrolling in the popup UI element.
If there is no value... Maybe display no value, or an empty tooltip, or no tooltip since we have the nifty + / circle+ to tell the difference.