I'm completely out of the loop beyond anything 16-bit, other than a half-dozen GBA or GB games, but I either own or owned at one point a lot of the 16-bit stuff. I have lots of pics of carts, boxes, PCBs, and I have such poor taste that I play a lot of them on a regular basis. I really all I can contribute to is that area.
I don't know if the wiki it setup to hold a lot of pictures, but I'd like to see some more manual scans, even if their just partial, of a lot of games. I know the PocketNES hacks are really uninteresting dogshit, but those manuals and to a lesser extent the boxes are just hilarious.