I have been enjoying the revived Doctor Who when I've seen it. It just never quite became a priority for me. In fact, I think (I'm not sure, but I think) I've seen more episodes for this season than any other since the relaunch.
Ever since the Eccelson season started, there has just been something...off about the whole thing, and I couldn't quite put my finger on it. It wasn't the change in tone. I was actually fine with that. Doctor Who has frequently been scribed (and lovingly, I might add, I heard this from Whovians) as "camp". Seeing the Doctor being given a shove into Babylon 5 territory worked for me.
I think part of what was bothering me so much was the familiar faces. Not so much seeing them again so much as them seeing the Doctor again. The revival started with a nearly blank slate. Daleks? Gone. Time Lords? Gone. Sort of like An Unearthly Child. And slowly, everything started getting reintroduced. I still think the episode Dalek was intended to shed some light on the Time War and that would supposedly be it, but producers underestimated the fandom not only following the show, but one of the Doctor's signature enemies.
And so the revived Doctor Who's clean slate started getting crowded again. Even worse, because the Doctor was alone. His allies were gone, but everyone else was there. And everyone knew him. Friends come and go, but enemies accumulate. In The Pandorica Opens, all the Doctor's enemies were there, and knew Matt Smith was him. Given some events where the time streams are happening individually (I've been waiting for something like River Song, where her events are out of sync with the Doctor's, to happen for a while now, ever since the Master and the Rani were keeping pace with the Doctor instead of catching him at odd times. Even Douglas Adams allowed it to happen to Arthur Dent in So Long And Thanks For All The Fish). And Moffat isn't above using timey-whimey logic to keep things moving (the charity special where David Tennant met Peter Davidson, and Tennant knew how to fix the situation because he had already seen his earlier incarnation do it). In fact, it's become his stock in trade.
This is problematic of everything, especially comic books. I've bitch, pissed, and moaned about how comics will start a new continuity or a separate continuity, and each time, no one can resist putting stuff from the others in there. It becomes distracting because, the more it looks like what they were trying to avoid, the less impact their original set up had (see: Smallville, Supergirl -- Cosmic Adventures In The Eighth Grade). This was what was happening with Doctor Who. As a result, I think I see what was so different between this revival and the original series.
The Doctor is too well known.
Across all of time and space, there's very little anonymity to him now. People not only know of him, but know to watch out for him. Compared to Attack Of The Cybermen, where the Cybermen only knew the Doctor was running around because Lytton discovered the sonic lance and told the Cybermen about it, it just felt like there were too many familiar faces at this circle jerk.
I think Moffat is trying to get the series back to its roots. It's not about some giant cosmic series of events. It's about a homeless traveler wandering the universe, discovering new things, putting things right (the last episode with the Cybermat "felt" like the Who I knew from before). And the only way he could do it, like David Bruce Banner, was to let everyone think he's dead. The secrets he carries will have to be looked for elsewhere. The Doctor's adventures could either be more isolated, or that could be the new focus, keeping things isolated so he doesn't find himself being hunted like in The Pandorica Opens again. After all, we still have the fall of the eleventh somewhere down the line. Oh, and hopefully, Rory stops dying as often as Kenny McCormick.
I'm very very interested in what happens next season.