Mostly out of a sense of conformity. We asked Michael to give no special treatment of DIPs originating from us, and this one was open, so he put it up for review. It is likely it will end up rejected in favor of https://github.com/dlang/druntime/pull/1756.
Wouldn't there be a compile-time performance impact from instantiating so many templates, virtually for every parameter who's type is defined in another module?
