Since it's obvious that the trade matcher is never going to be updated, might I suggest that EVERYONE adds the two things to their trade list:Wants:
"card x" (example: Trade Caravan)
Haves:
"card x" (again: Trade Caravan)
In doing so, the trade matcher will then see that everyone has at least those two cards - so it will give that "false positive" - but it will also at least match the rest of the cards on its database that are available to be matched.
I know there are plenty of threads out there that have a lot of my wants, or need a lot of my haves - but because of the trade matcher not working with the last few years of sets, it doesn't display any matches. This isn't a real fix, since it's just gaming the system that is in place that requires two threads to have at least one matching have-want to one matching want-have.
I hope I was able to convey this idea clearly.