I'd like the stdlib to be reimagined with modern Nim features as @mratsim details.
E.g., sequtils and co need to be like zerofunctional and not copy, sets needs to have parity with the `set` type and so on. For me, the stdlib is the 'interface' Nim provides to "get stuff done" and should be as fast and intuitive as possible. Currently I tend to avoid stdlib `map`/`filter` because it's (sometimes considerably) less efficient than manually writing for loops.
