(1) Let's see what you could do..Instead of episodic blogging about Nisemonogatari one could for example study and explain all the in-jokes and references to Japanese media and products that's hidden in there. You could also do that with Bakemonogatari or Zetsubou Sensei if you so wished.
(2) One could compile all the shows airing and make a list on who's subbing them and thereafter rate them so you know where and who to get your subs from.
Stuff like that, all do-able with second hand info.
1) I'm covering Nisemonogatari and I can tell you that the level of awareness of Japanese pop culture to notice these things is a level of knowledge that I don't have and the amount of time and research required to study and explain them is more than I'm willing to put forth considering that I have a job and don't get paid for anything done on the site.
2) We already do that for legally streaming shows. If you're talking about creating a list of fansubbers and pointing people to where they should pirate their anime from, AV is strictly against piracy or support/endorsing sites and organizations that are engaged in it.
Well, that's too bad.
The sad truth is that legally streaming shows simply isn't a good enough solution right now for a lot of us, and they don't support a very large number of countries.
But that wasn't the point, my point was basically that I think this site's userbase is so small because you don't do enough unique features like that.