I just added a comment here re. Mixcloud and NTS Radio who currently archive off their shows onto Mixcloud.
Interface wise it would be nice to see a list of your ‘subscribed’ users/shows/stations within Roon for which Mixcloud have an existing API and then as an additional bonus be able to add individual episodes/mixes to your library, or at least flag them so they can be filtered out.
That last feature might be better rolled into the wider ability to support podcasts and (non-radio) streams as they share a similar feature set ie. search, list all, list subscribed and list latest and filtering, along with a way of ‘adding’ or bookmarking/flagging your favourite mixes/streams/episodes within Roon.
And yes I am aware of this #audio-streams but Sonos support MixCloud so there must be some room for a conversation there.