Very interesting survey of the weirdest languages in the world (spoiler: English is not the weirdest). All I can add is the single Hindi weirdness (predicative possession, i.e. "ke pas") is quite weird, but otherwise it is a good sensible language, rather like Latin - except for the numbers. Turkish, another non-weird language, is also a good sensible one: my limited acquaintance with it did not reveal any weirdness at all. Perhaps being a good sensible language is in itself weird.