While I do not appreciate your wording "death from cold fusion" when we speak about risks of proliferation connected with new technologies, I already added some kind of probability estimation to the map and painted boxes in one of three colors. But instead of probability I used "Importance of risks", which more clearly connected with what we should do to prevent them.
"Importance (or urgency) of risks is subjectively estimated based on their probability, timing, magnitude of expected effect and scientific basis for the risk. Importance here means how much attention and efforts we should put to control the risk.
Green – just keep it in mind, do nothing Yellow – pay attention, do reasonable efforts to prevent Red – pay immediate attention to prevent" The pdf is here: http://immortality-roadmap.com/nukerisk2.pdf
In it only two risks are red: nuclear war and nuclear-biological war.
The risks of large scale proliferation connected with new technologies is yellow.
and the risk of Jupiter detonation is green.
I created new map: The map of global catastrophic risks connected with nuclear weapons and nuclear energy.
The map is interactive: if you press on the icons on the first page you will get detailed explanation of the topic. But it works only in pdf.
I hope it will make the map more readable but also will help to preserve all detailed information
You could download pdf with working links here: http://immortality-roadmap.com/nukerisk3bookmarks.pdf
Or you may read a presentation here: http://www.slideshare.net/avturchin/global-catastrophic-risks-connected-with-nuclear-weapons-and-energy
Old school map full of text is here: http://immortality-roadmap.com/nukerisk2.pdf
I would like to get a feedback about this new map type: Is it helping readability and understanding? Does it look more rational and convincing?
I include here jpg-screenshorts of the pdf, but working links are only in pdf.