We're currently using Magento CE v1.8 and are subject to the bug which causes product URL keys to be appended with an incremental number every time we run an index, which in turn is causing a large amount of URL rewrites to be generated each time as well. However, with the way our site operates we only use the category URL paths/keys i.e. the product URLs are not included in our sitemap and are not published for the public to use.
My question is; would there be a problem if we just removed all of the product URL keys?