The most annoying part of the BBC for me is that they split away the radio stations from iplayer, when most devices i.e. tv's, games consoles only have the iplayer app installed, not the Sounds app that they moved radio to. The Sounds app itself doesn't have a good UI and is overly complicated.
I think the BBC need to be moving to become a subscription service, or free with advertisements. The commercial side of the BBC i.e. BBC Studios is making millions from the UKTV acquisition. I think they also own other advertising based tv channels too. The BBC needs to decide what it wants to be, either a commercial organisation, which it as already proven to be successful (the current new head of the BBC is the one who made all the money at BBC Studios), or remove the adverts and give us commercial free channels like the regular BBC ones are.