[nowarninglabel]

I was just setting up a Wikipedia clone (using the dumps and MediaWiki) and adding some features to it for my 4 months at sea with 250 students. No internet in the middle of the ocean, so it was helpful for them to have a server setup for them to still use wikipedia. Wiki has category dumps and such already, so just used them. But yes, for your use case if you are extracting something that they are not doing already then I could see the potential gains.