With only 13 daily flights it is hardly a hub. However, with a brand new 15 gate, $850M terminal still going ahead (they could have easily stopped construction, since it did not start until January 2002*), United remains dedicated to the Miami market. Assuming things go smoothly, you will see United growth in the future (late 2004/early 2005 should be when the terminal opens), by both United and Star Alliance carriers. MIA
will be the first "Star Alliance Hub", in which all Star carriers will share everything (ticketing, ground crew, baggage handling, gates, etc.) at a dedicated facility. Paris will be the next one. I've heard MIA
will be back sooner than later, but that's it for short term route expansion.
*Obviously, UAL Corp. isn't the only one paying for this. Mexicana, Lufthansa, Varig, and Miami-Dade County, etc. are putting in a big chunk too. However, of private investors, UAL Corp.'s "donation" is by far the biggest and most important.