Future, like Hawaii, Costa Rica has áreas good enough for mangoes. CR is a commercial exporter of mostly Tommy. Seasonally, Haden and lots of other, newer selections from Florida and locally are available.
But durians don’t grow well in those areas.
I don’t know that much about Thailand but I don’t think Malaysia has anywhere to grow mangoes as good as the CR central and northern pacific areas. I think they’re still too humid for Gary’s preference but you’ll have to ask him.
I’m Hawaii it’s a much shorter distance between the wet and dry zones. One difference is that I’m only 9 degrees N instead of more than 20N
Peter