Madagascar shares space on a high old plate with Africa, and as such will not experience unexpected adjustments in subduction or shattering during quakes. It likewise has a high elevation, and much of Madagascar will remain above water after the existing poles melt. The tropical climate it experiences today will cool slightly due to being closer to the new South Pole, India, but will still be a fertile and temperate island. The primary problem Madagascar will experience will be assaults during the shift itself from the Indian Ocean, which will first rise slightly as the week of rotation causes water to migrate toward the pole from the equator, then receive a steady flood tide from the Pacific which will empty it's water from the shortening Pacific into, among others, the Indian Ocean, then sudden drops as India goes under the Hymalayas, and all this turmoil causing roiling waters throughout. Thus, massive flood tides running the water up into the highlands via tidal bore, even to washing over the mountains to the lands on the Africa side of the island, will occur. Many will be washed out to sea, and drown.