I’m not sure that downloading random files from every server you visit is something that people want to do these days. I would certainly be reticent.
It would be nice if people could agree on 3/6 of the best custom maps suitable for 16 to 24 players and create 1/2 extra campaigns which any servers switching to unranked could run to maintain consistency. Perhaps these campaigns could also be hosted somewhere more ‘legitimate’ (splashdamage.com, or ModDB)
Also, some documentation for new players and admins (a sticky thread here would do).