Originally Posted by
flyer703
We're talking one gate on the end of the terminal- two arrivals/departures a day. No big deal... Think of how cool it would be

Airlines don't operate based on how cool things are.
The 787 is significantly heavier than the 767. In addition, the 787 fits in a different gate class due to wingspan, which would limit not only parking, but taxiway operations; I believe taxiways J and K would be far under minimum separation.