The German example is useful, I think. They have a number of radio orchestras, I think 11, if my memory serves me correctly, and those radio orchestras are advised directly and indirectly by local musicians.
There is a close connection between university and conservatory music staffs, particularly conservatories, and the ministry of culture, and those public broadcasters. So there's a circuit of opinion and information that flows all the time amongst those four players, and that's worth thinking about, it seems to me.