I like Moffat's helming of the show, I think for the most part he does good stuff (write better standalones than narratives admittedly) but this is basically one of the main things that get to me- the dangling. The alluding, the off-screen and the unseen.
I know RTD was sometimes a little too blatant in the way he spelled out and showed his stories, but i'd say Moffat is perhaps too much the other way.
The TARDIS exploding and a lot of the Silence and River stories too are huge examples of that- they've never really felt fleshed out enough, or more worryingly, concluded. I'm worried of that a lot going into this "DOKTAH WHO" and Fall of Eleven stuff we seem to be gearing towards, that it's not really going to happen or be shown.