The role of vision documents in Swift evolution

Not much to add here. I believe this is the right way forward as a way to direct our focus to specific aspects of the language that ought to be improved.

I do have a couple questions:

  1. Are all member of the Swift community encouraged to submit their own vision document, as they would perhaps submit their own pitches? In other words, would vision documents submitted by anyone outside of the vision's designated workgroup be taken into consideration, or simply ignored?
  2. Will all the other informal vision documents (e.g. Variadic Generics, Macros) be retrofitted and subject to this process, or at least in some way specified as to how much in those manifestos is strongly agreed upon by the Core Team?