Radio 3 management submitted its own proposals - as part of the previous 2011 review - to continue with its strategy of making the station more 'accessible and welcoming to new listeners'. I suppose that the problem is that there is no point in making something more accessible if fewer people actually then access it, which happens when Radio 3 ratings continue to fall. The trick, I suspect, is to broadcast on several different levels simultaneously, so that Radio 3 can appeal to new, old, unknowledgeable and expert listeners at the same time. Of course, this is easier said than done! You sometimes see this working at the Proms when punters are invited to different events in different venues at the same time, for example, on the Last Night of the Proms!
As for live broadcasting, this seems to me to be the justification for having so many BBC orchestras. I shall ask the legendary bb to post something about this.