The original tread about international flights, I believe was really making reference about same size aircrafts as those already operating in the country, it was really about making the process of entering the country easier for private aircrafts and charters I guess (customs/immigration)which is not a stupid idea in my opinion.... in fact it can help attract the jetset and wealthy businesspeople from the centralamerican countries and mexico.
And in reference to the playadel carmen nightmare, it´s not really due to their allowing international flights, in fact more than 90% of visitors to playa del carmen, enter the country via cancun´s airport and then take a transfer to playa. Playa del carmen has an airstrip similar to that of SPR, and only caters to domestic aircrafts like caravans and smaller jets. Playa del carmen´s urban problems are as a result of unplanned growth. Something we ought to learn from.... Growth is imminent,everybody wants a little piece of our paradise, we might as well plan for it ahead of time.