Edit: But that’s typical search engine. Google and DuckDuckGo tend to do the same thing. I think they teach that in searchEngine101.
Right, and this is why it will never replace a summary made by an human who knows which add-ons will work well together. That could be the point of a Wiki, but that one is spammed to death, so its a no-go unless things changes.
So as a temporary solution, an up-to-date sticky on the forum could be very useful, maybe even a locked thread so that there won't be like 17 pages below the OP. The person or groups or persons keeping it up-to-date would have access rights on that post/thread, I'm sure that's something possible on Xenforo, and when an add-on author wants his work to be on the list, well he simply sends a PM to any of those people.