I don't and never have used Lab view, but I am interested in adding features to better visualize data flow. I feel like this can easily err on the side of being confusing/annoying, but do you like Labview's data flow features?
I don't mean the lack of data flow like a bad thing. I think your idea might be better, since data flow aspects might be difficult to organize in a 2d plane. It gets cluttered fast.