This is on purpose not a very concrete question, I simply want to know some interesting properties other languages have that English doesn't, or features you even think English ought to have, this can be with respect to all linguistic fields you can imagine (grammar, phonetics etc.)
For the correct answer I'll choose the most voted property.
lists of languagesquestions, which are on topic. – Adam Bittlingmayer Aug 22 '19 at 19:49By "productive", I mean a generalizable grammar construct that can be used to produce dimmunitative forms of almost any noun. In contract, English has it to a limited extent, but only as "hard coded" cases, e.g. piglet vs pig.
– Alexander Aug 23 '19 at 23:44