9+ passenger vehicle recommendations?

We are at capacity with our Toyota Sienna. Though we're not actively discussing another child, that is always a possibility in our future. Whether it's a child, or a guest, we need at least one extra seat in our vehicle, but would like to think ahead and get something with two free seats. I love Toyota vehicles, but even the Sequoia would be too small if we had another child (no room for a guest). This leaves us with full sized SUV's and