My thoughts, some already wisely suggested, are:
1. Monterrey, Mexico: not only for an aforementioned reason but because its population is large (over 3 million) and it's one of Mexico's main commercial and industrial cities. The commerce and large middle-class offer many opportunities.
2. Panama, City, Panama: The canal and free trade zones make it a major city for banking and shipping.
2. Vancouver, BC
3. Anchorage, AK
4. Panama City, Panama
5. San Jose, CA
6. Oakland, CA
Some of these airports' metropolitan areas we either don't serve or underserved; So much untapped potential. And the company's network needs to better balance the cities between which a passenger can fly. Currently, service in some markets is over concentrated (Syracuse, Rochester, Norfolk, Harrisburg, etc. etc.), some markets are underserved (LA area, SF Bay Area) and there's the "sorry, but we but can't get you there from here" markets.