Front matter is a nice implement to Scrivener. I like to stay in Scrivener as long as possible and with the front matter is even easier.
So why not implement it with a back matter as well?
My scenario at the moment is this: I have a preface and a postface (or afterword if you like) and a body matter which consists of numbered chapters (and yes, I have used those tags to get the auto numbering).
Preface and postface are not to be numbered. So far it is not easy to do it in Scrivener.
So I thought that a way to do it could be to use a thick thing in “General” after “Include in Compile,… Compile as-is” which says “Include count in auto-numbering chapters”
I like the idea of a space for author’s biography and such, but if all you are missing is the lack of automatic chapter-numbering on your back matter, have you tried using a different structure for those documents? If you use chapter folders to designate each chapter for instance, then you could use plain documents, or a stack of documents, which can have different compile options from “level 1” folders.
robertdguthrie, I’ve read about your workaround somewhere in the forum.
I’ve posted my personal case in the wish list because I think that since the authors of the program have acknowledged the front matter implementation I hope that they’ll consider the back matter as well.
As for the option not to include a document (text or folder) in the counting chapters thing, the idea sprang from a couple of books (I can’t remember the titles) which proudly showed an “Interlude”.
I’m always chiming in with the what-you-can-do-now option while people wait for Keith to spot their requests, in case it takes a while to implement, or is nixed later. It’s safe, as a general rule and in this specific instance, to ignore my responses. 
Well, no! It is impolite not to reply to a fellow scrivener, specially if he or she offers a piece of advice!
Moreover a reply helps me bump my request a second time 
This is already on the list as a future possibility, but in general, back matter needs less customisation. The thing about front matter is that it often requires different headers and footers and page numbers to start after it; back matter rarely needs any of this. So setting up the structure to account for back matter and deal with it is a good way of doing things.