Copa is horrible right now. The only way to fly them to South America is to spend 12 or more hours in Panama City. There are so many airlines flying directly to Central and South American cities from the US - flying via Panama makes little to no sense for most people. Copa doesn't seem, therefore, to add much value to ST. TAM or maybe Aerolineas Argentinas would make more sense. Having said that, though, isn't Copa part-owned by CO? So maybe they come along for the ride anyway...