Lot of good stuff there, but all the snes docs I can find are in a very crude form. Isn't there anything refreshing like pan docs for gb/gbc? I've probably been spoiled...
I found this a few minutes ago. One thing that can help alot is learning to code for the SNES, that will make writing your emulator ALOT easier! Also, try looking at some SNES dev sites. I'll let you know if I find anymore
EDIT: Sorry if it's not what you are looking for, just trying to be of help.