I have an idea on Clara.
SPOILERS for the Season finale of Doctor Who.
I for one don’t think the season finale of Doctor Who puts off the idea of Clara being the Doctor’s Daughter, Jenny. However, I think River’s statement about how she was linked to Clara and was still there makes it more likely that she is the Tardis in human form (again). When we last met the Tardis in human form, the Doctor said he stole her, but she said she stole him, and in this episode she tells the first Doctor not to take the TARDIS he was about to take, but to take the one next to her.
She enters the time stream and sees all 11 of the Doctor’s incarnations, but not John Hurt’s, which makes Smith the 12th Doctor…and Hurt the 9th (bumping Eccleston to the 10th), but raises a new question of why only 11 incarnations? What about ones past Smith? Smith being the 12 Doctor suggests there is at least one more past him, so why did she only see 11, does he stop calling himself the Doctor after Smith? Unlikely… I guess we’ll get some answers come November.