2. The Land Of Song
No, much to the probable disappointment of many readers, I'm not implying a return of River Song (Too soon? I'm sorry I brought it up! Please don't cry!). Murray Gold has recently voiced his willingness to participate in a musical episode of Doctor Who should it ever take the fancy of Steven Moffat. I'm going to wager that it wouldn't ever happen, as it's totally not the style of the show, but imagining it does admittedly bring about a little chuckle. What if the TARDIS took a detour to a land where everything was in song? The Doctor dancing a jazz or tap routine, or perhaps Clara belting out a power ballad show tune akin to "On My Own" from Les Miserables? Hilarious.