[AndrewP]

Instead of having to search for a podcast, stations that broadcast them could be better?

Well it's interesting you said that because when I've described Radio 4 to my less enlightened (!) friends they've likened the programmes to podcasts
I think the BBC should really improve advertising its programmes on Radio 4 like they do TV, sometimes it does feels like we're a club that's siloed off..

I realise I've gone off-topic.
To bring it back, I think these new stations are a great idea to bring more ears to the BBC.
I'm sure dance music lovers will appreciate a constant flow of heavy vibe music with no advertisements.
According to some Uber drivers I've had, passengers have asked them to switch station when the advertisements come on the stations