Chuck,
To be honest I hadn't given that much thought as I would have to put in place a vetting procedure for the images / users.
There would also need to be a clear hierarchy for the image pages, a naming convention for the files, notes included for each image etc.
I had considered setting up a set of pages relating to monochrome images of unit emblems to give users a reference point when trying to identify unit insignia. See the Aufkl. Gr 122 page -
http://www.luftwaffedata.co.uk/wiki/...2_Unit_Emblems as an example.