make @safe "non-escapable"?

[Era Scarecrow]

On Thursday, 7 February 2013 at 07:47:00 UTC, Johannes Pfau wrote:
> But isn't @system completely useless if it can't overwrite 
> @safe as @system is always the default?

@safe:

//not in struct/larger declaration so is acceptable
@system {
   void func();
}