You keep saying match making system but I don't know what your talking about because there is no system called the match making system. If you mean the duty finder then that covers more then just the wolves den and there's no way they would remove the whole duty finder because the wolves den has low queues.
Even so the system is working fine, it already searches between all servers to find teams so I don't know what more your expecting. It's not an issue with how the search is done, there's just not many people that want to do the wolves den anymore after front lines. They would have to add more to it to make it more appealing