You think there are no benefits because you are not looking at the statistics of a site of your own that sees relevant traffic. In my opinion, there is room for improvement when it comes to making moderation more intuitive in relation to file deduplication. But I really don't think it should be removed due to the bandwidth efficiency it brings. kohlchan upload bandwidth usage has been noticeably reduced. And the more popular a site is, the more relevant the download bandwidth efficiency can be observed. About the old filenames, That's just legacy and nostalgia. The effects it has on user experience are negligible in this equation.