I've somewhere read that they're not really doing camera-flip thingy for reasons, and searching an old forum gave me a post by boourns, an UI Designer,
We're unlikely to do really disruptive things like allow map mirroring and things like that. This would be technically risky and time consuming and potentially negatively impact player communication and gameplay because two people on the same team are seeing completely different things.
but yeah, situations might have been changed, so I don't think it's that impossible to have a camera-flip. Also, they're hopefully still doing something for the locked camera (here is the most recent update as far as I know).