Last time, I suggested focusing on editing questions. There's still some work to be done there.
I have a nagging concern about this site. It seems like many of the askers are getting useful answers. But I'm not sure those answers are helping many people who aren't using this site. A few years ago, Joel Spolsky wrote about building enduring resources:
Don’t answer questions that have already been answered elsewhere. Yeah, you might earn a couple of points of reputation, but, because you are duplicating content, you are actually making the internet worse. Why? Because that answer might be true today, but as technology changes, it might not be true tomorrow. There are almost certainly thousands of wrong facts on Stack Overflow already, which may have been true when they were written but are no longer true. These facts will pollute the Internet for years. This problem is not tractable if we allow Stack Overflow to become just an endless river of questions and answers. It has to be more like a Wikipedia of Questions and Answers, with canonical answers that can be edited in one place, if we are ever going to stand a chance of keeping all the information that we expose to the Internet at least reasonably correct.
The bulk of the questions on Open Data seem to be resource requests; the equivalent of identification questions on Movies & TV. Personally, I think these are great for giving new users something to contribute. However, they don't do much to bring people to the site via search. In fact, the only really significant search string that brings traffic to this site is
linked question on government. So even though this remains a great resource for people who know about it, there's little chance for organic growth.
Consider helping people use Open Data in addition to finding it
The top question in this self-evaluation is a great example: Rocket attacks dataset in Israel and State of Palestine. There are two distinct answers and both do an admirable job of explaining how to obtain the data. If you prefer CSV data to JSON, one of the answers points the way. The answer suggests several other data sources and gives advice on how to request one that's not exactly open. More answers like these could help this site be more than a curated list of resources.