I think people are more likely to understand the strength/weaknesses of a language by their domain of expertise.
For example you are a CLI app dev, what was good/bad in Nim (Russian glyphs support ;)). As a numerical computing dev, my top 3 are: operator overload, multithreading, autotyping. Macros are a nice bonus but I wouldn't need them for the basic stuff in other languages (Fortran, Julia, Python) though now they allow me to do stuff far beyond basic language capabilities (an embedded DSL). And interpreter/repl is my big painpoint. A networking dev would be focused on Async, handling messages (serialization, deserialization), cryptography and time handling. For some other features, it's easy enough to replicate, for example the `existence` operator can be add with `options` or maybe even `if declared(x)`.
