To me the Stdlib API looks unfixable. So imho there's only one way:
* put the existing stdlib into a legacy gem
* create a new stdlib with a new, good, (incompatible) API from scratch
* deal with the incompatibilities that will happen
* put the existing stdlib into a legacy gem
* create a new stdlib with a new, good, (incompatible) API from scratch
* deal with the incompatibilities that will happen