There's a bit of a stereotype about labview that it is graphically beautiful but its not visual programming because it inevitably results in more typing of text than anything else, otherwise you get a bowl of spaghetti. With textual languages you can interpret it to figure it out, perhaps a billion times slower than the computer, but exactly the same. Visual is a little harder to figure out.

Or in summary I've seen large complicated Labview that's totally write once read never.

You might be interested in screenshots from GNURadio. Same effect. Spaghetti bowl of a schematic where a plain text version would be a lot clearer. Google for a simple WBFM radio with squelch and AFC aka your $5 walkman broadcast radio, and you get something that looks like its launching the space shuttle.