I hope I didn't step on your toes there,
No! Not at all. I did mine because I had already done one for the Mega2560, the Due had been (finally) announced that day and I had ordered one from the shop. So I took my photoshop file for the Mega2560, swapped in the Due photo, and then modified it based on what info was available then.
And the reason I did it was because the official documentation was lacking and I thought it would help others as well as myself. That is the point, right? And yours adds a lot more detail, and is much better - well done! The community benefits.
I wanted to be sure that anyone who came across this thread (by Google search, etc) got directed to the better source of information.
I just thought that after bagging Arduino documentation for ages I should actually contribute something and went for it.
BTW I haven't added the interrupts yet, I'll grab them off your drawing but still need to verify. Where did you get the data from, I seem to remember we had a thread about this but I can't find anything in Winterrupts.c or.h
I am not sure about the interrupts on that drawing (as it says in the first post). And Massimo said the interrupts were not supported in 1.5.0 (which is why you can't find it) so I had intended to come back to that once they had it implemented and there was a .h file to look at.