I said this in a topic similar to this one; it all depends on how they use it. First off, I say nay for ranked matches. To uneven. Even social I'm not sure about, because a lot of the time people quit because they are losing, so if you fill in their spot, you're hopelessly behind, and there's an instant loss for you. If they are going to include this system, it will need quite a bit of tweaking.