Novus - 2:37 pm on Apr 3, 2012 (gmt 0)
I have a few thousand products on two different ecommerce sites, that could well be described as content lite-ish, but re-writing them would a monumental task, I have not seen any effect from Panda, unless they are poorly written & optimised I would not re-do them.
What I would do at the very least is;
You may want to start a blog or a section of the site that feature certain products, and has extensive information about them. Could be a blog, with more photos, video(s), reviews, etc.. Certainly your more profitable or best-selling products might be ones to focus on first.
Failing that try to change a 10 or so. and see what happens. My guess is, its probably not worth it to re-wite them all.