Aaron, thanks for your reply. On a technical level you are simply saying that it is not currently possible. I'll report that at the wiki so we can vote on a different option. But I respectfully disagree regarding the value of the function, and hope you will take an alternative view into account. You wrote:

You cannot have pages "use the latest quality version" as the default version. This would create a very confusing interface that takes a mouth full to explain.

But there would be nothing confusing about it at all: "When a page reaches X level of quality, that version becomes the default." What is confusing about that? Not only is it completely straightforward, but it would seem to be a very basic function for an extension of this sort. At the very least as an option. You also correctly write that:

Also, it's hard enough to keep "checked" versions up to date, even hard for"quality" ones. You don't won't to end up with people having their edits take weeks (sometimes months) to show to readers because they haven't been highly proofed yet.

I agree of course that this can be a problem for any installation of "Flagged Reviews" no matter what the configuration. But a configuration such as the one I'm asking about wouldn't make that problem any worse. On the contrary, it would make it far easier to deal with because only a minority of highly feted pages would ever wait to be proofed. It would certainly be far *less* of a problem than the option that is currently offered, namely that the latest reviewed version can be the default for *all* pages, no matter how high or low the quality). Did the option I'm asking about ever exist in any previous version of the extension? Since this is such a critical and important Wikimedia extension, is there any appropriate forum for focused discussion of it? (Or is here at Wikitech the right place?)