I guess I didn't really answer your question. It wouldn't rely upon the ramdisk. It is meant to run after install. So it would presumably have all the firmware. I was thinking about running it similarly to the install output though. I setup a local mirror once and it crapped out after a while and just kept running, waiting for a connection without any output. I think that it would be kinda neat to have something that could potentially lead you to a new mirror that is faster than maybe a mirror you chose manually. I wasn't aware that the installer component that I was referencing edited pkg.conf . I don't know how to calculate the "freshness" of a mirror, like the Debian program other than by testing their latency. I suspect that even with the best O(1) network calculation, you aren't really going to get the best result.
-- -Luke