Too bad this is limited to only two tickets per PNR, for award tickets. I can see booking 3 Y award seats, vs. 2 J award seats, for a lower net. Then again, guess there's nothing stopping you from booking 2 Y awards on one PNR, and 1 Y award on another PNR, if you can get the seats assigned next to each other at booking time.
And luggage allowance only applies to the booked seat, not the extra seat. Pay for the seat, don't get the luggage allowance. That stinks.