Don't know what levels of control and delegation are available out here on the different parts of the site, so not sure if any of this is possible or even a good idea. Just fishin'...
Is it possible to enable at least picture uploads for products on the reviews page that were originally uploaded by somebody else? There are several without pics that could be enhanced, but hate to nag the contributor, especially if they don't have the pic or had trouble with the upload process. (hate to nag the proprietor too - that kind of stuff can cost you a password!)
There are several with room for more details and maybe even some genericizing. Would it be (or is it already) possible to add/edit a product description that somebody else created? This feels like an editorial control issue and would need to be done by a recognized moderator or at least reviewed and approved by a recognized moderator before going live (a la wikipedia).
Would is be possible to assign some product review moderators who could help guide and fix product entries for particular sections? Might even be able to get them to beat the bushes for product uploads in their assigned areas. Not sure who might be a good candidate for that job

hmmm...