Thanks for your insight, it was very interesting.
The impression I seem to be getting is that the episode comes down to how much you like Clara's character. While I don't dislike Clara persay (she was much better in series 8-9), I found her to be one of the weaker companions in new who. If you're not invested in Clara, the Doctor acting out of character to save her becomes less believable - especially when he didn't go to such lengths to save other companions. Conversely, if you are invested in Clara, his actions make more sense. I think the scene with the gun is a really good example. While the Doctor has used guns before, it was always in really dire circumstances. So, the question then becomes, 'were the circumstances in Hell Bent sufficiently dire for The Doctor to use a weapon?' If you love Clara, you'll probably say 'yes'. If you don't you'll probably say 'no'.
If I may add a specific point on Clara's death, I think the problem people have is that there's no clearly defined limit on how long Clara can stay alive. While she will eventually have to go back and face the raven, she could potentially live for a very long time before doing that. For some people, that makes the death less significant because Clara's bravery was expressed through how quickly she accepted her fate. In other words, the fact that she didn't face her death 'there and then' makes her less brave, and therefore with it, the scene less meaningful. Hopefully that made sense xD.
I completely agree with you on Gallifrey, and I'll be very excited if they decide to go down the path you described.
On the contrary, I actually loved season 9 up to Hell Bent. While I understand that it can be frustrating when people disagree with you, responding defensively isn't a good way to promote discussion. The video wasn't intended to be a personal attack, if you'd like to explain your own perspective, I'd be more than happy to listen.