What about allowing blanks and/or light strips and/or visual text modules to help denote and document logical sections of a patch? Basically any visual only module that does not contribute in any way to the sound. Something like I did for the AirWindows VCP #75 challenge.
Not only can this help while building a large patch with only one module, I think it is also instructive and more interesting for the consumers of the patch.
I know what module I am going to use, and I am pretty sure I will want to document as I go. If need be I can strip out the visual only modules when I am done. But I think people will enjoy it more with the documentation.