I agree with your suggested points listed, Dave. What I'd like to see is:
1. Every BBC local radio station having a weekly folk music hour. It would be a natural place for diary events, session reminders, artists on tour in the area, local festivals, etc.

2. At least an hour a week on national radio for English folk and tradtional music. This would be nothing like Mike Harding's show, and would be a completely separate concept and slot. It could be a mix of archive recordings, new recordings from up-and-coming performers, and tracks featuring the best ceildh bands, soloists and groups on the scene, etc. There could be themed programmes for certain times of year or seasonal "specials", or to mark particular events, festivals or anniversaries. This would have to be on Radio 2 or 3, as Radio 4 is intended to be a primarily a speech station.

3. More folk/trad music played alongside other music on Radio 1,2 and 3. Late Junction already give us quite a bit, but there could be more. We don't want or need this music to be ghoettoised.

4. More inclusion of folk music in mainly-speech programmes (Woman's Hour, Loose Ends, music documentaries) on Radio 3 and 4. It happens sometimes but not enough.

Here's a suggestion in preparing for the recording: make yourself a shortlist of 3 main points you want to get in, and for each of them, break it down into 3 ways you could introduce that point. If desperate, just make your points anyway, no matter what you're asked (like politicians do). And have a final soundbite prepared for when you know the recording's coming to and end.

Good luck!
Marje