@bather \- we want to make `system/` smaller, not bigger. I think `std/prelude` (with an `import mod {.used.}` feature discussed above) is a better place. The prelude is specifically for people that want to "just get to work" without a lot of imports which is what it sounds like you want.
Parenthetically, our RFC just got posted to HN. Doubt we will get any real feedback unless it makes it to the front page, though.