I am not going to look forward to this project due to lack of transporation facilities, consistently bad weather in the region and protected groups from main island.
It is airport in northern island, surrounding by mountain. It is extreme danger airport to land in bad weather, especially when it is covered by fog.
I cannot see main island is going to have any casino in following years. Majority people in Taiwan main island do not accept casino, they against it. Even you are talking world class resort without casino, people will against it if investors don't choose proper location (avoid environment sensitive area, for example Eastern Taiwan costal line, mountain...etc.). Don't think Taiwanese government will help you to solve it when it come to politics.