I believe I've still got everybody's submitted screenshots (including Tei's and I believe Wildcat's... but send again just in case), and have been using them to fill the Brawl cameo pages. However, the ones I listed above are the ones that were missing.
I have all of Tei's pics of Ike's alternate colours, but none of Ike. There were a few other missing characters, and I appear to have separate screenshots of those (I'm assuming from Wildcat), but still no Ike or Grey Fox.
I don't think I ever got items or Pokemon, but I have all other characters, assists and all alternate colours.
My new deadline is 28th June... the site's 10th birthday!