It would still be a win, because I wouldn't be forced to pay for it under threat of violence. I have no objection to political parties, industry lobbies and religions funding their own propaganda channels. I just oppose the coercion.
I don’t think it would be a win, because the BBC is extremely powerful after decades of enormous public funding. It owns its own massive studios, it has vast amounts of gear, and it has all the infrastructure it needs already set up. (A lot of its content now comes from independent production companies, but it still has all those things.)
And as I said in the post, it still has the reputation, and the prime slots on TVs and digital boxes. How the hell can any new channel compete against that? Letting the BBC loose from the licence fee and all the restrictions attendant upon the fee would be could setting a monster loose.
If the BBC leftists want to have a TV channel let them start from scratch. Why should they be gifted with the BBC?