I don't know whether "most modern devs are using JSON",
Yeah, I really don't have any data to back that up, I shouldn't make such claims :). But I think it is safe to say that many devs use it.
More generically, I don't think that new cross-origin APIs that "just return a string" (but are clearly intended for structured data) should be standardized (or shipped) given the experience that's available.
So you would be in favor of a responseJSON property?Kris
