@Tak Ogihara One of the things I love about it and why we are considering buying something here is due to its direct flight connections into Cancun airport. Living here in Phoenix, its actually our only direct flight to a tropical location on the Caribbean Sea, that's important to us and I imagine to other travelers as well. The fact that we can be there in under 4 hours means you can do a long weekend away vs other locations that would require a stop over and it turns into a 9+ hour journey.
You also mentioned the new Tulum International Airport and the Tren Maya. I'm very excited about both of those projects as it shows the government is investing heavily into the area and it gives me confidence that they will have the violence under control.
On that note, the architecture down there is blowing my mind! Just beautiful amazing! This is the new Tulum Train Station that is supposed to start construction in Jan 2022.