I have been having a lot of issues with the current series, and I think that it is more a writing issue, and a style issue than anything else.
With previous series, even the ones with RTD producing, each episode in some way was interconnecting, 11th doctor more so, as we had River jumping in and out of the episodes, which tied things together a lot more. Ultimately we kinda knew what was going on, the whole Master ark, return of Davros, River ark, all these story arks people kinda knew what was going on.
If we look at the Pandorica ark, a fair few people disliked it, purely because they couldn't really see the connection between the episodes, only the odd few noticed the scenes which were out of place and the doctor jumping back through time.
The current series, suffers the same with the Pandorica ark, Missy is appearing now and then, and nobody really knows wtf is going on. Added to this, the stories themselves haven't really been the greatest, and I think that is mostly because of how the doctor is being shown.
Now I love Capaldi, I have seen him in a lot of programs before, but the doctor isn't being the doctor. If we look at the episodes so far, they for some reason they have either resolved themselves without intervention from the doctor, or have kinda been about robots, with the exception of flatline. We have had several stories that we are simply ment to just accept things happened and are unanswered, Sherwood episode, the forest episode for example, so many questions, nothing answered.
What we are lacking from the Doctor is the big, I am the Doctor, everybody lives, you have to get past me if you want to touch earth. This is really lacking, the doctor in new who has been portrayed as someone people would stand behind, would fight for, and ultimately die for. 12th... isn't in any way that kind of doctor. Which is kinda wrong.
The doctor himself comes across as very cold, allows people to die rather than fight til the end for them to live, something 9, 10 and 11 would of done, and had that person of died, they would of felt it, 12 doesn't, or certainly doesn't show it.
For series 9, they really need to bring this back to the doctor, I want to feel that earth, and humanity is important to him. I want to feel the doctor is someone people would stand behind without question. I want to feel he is my doctor.
Story wise... we need some damn aliens, not robots, not machines, not mechs, we need aliens, spooky, scary, icky aliens. We need alien planets, strange places. We need more intermingled stories, and most importantly, give us a story arc we can kinda see happening.
Now, I have a huge amount of faith in moffat, I am a huge fan of Sherlock and other work hes been involved in, however he really does need to retake control of Doctor who, and take on board the issues and mistakes have, I have a lot of faith in season 9.