I would be overjoyed if Picturehouses opened a cinema in CP! At the moment I end up getting the P4 to the Ritzy, so something much closer to home would be wonderful.
I see your point about parking Roz, but the Ritzy does very well without any parking nearby to speak of. CP is really well served by buses (as is Brixton) and as sandy has mentioned it's also only a couple of stops on the train. I don't quite understand why getting a bus isn't a realistic option. I know that getting around by public transport is something that some people just 'don't do', but I've never really understood why. But then I don't have a car, so I suppose I've no choice!