Domestic Eleven/Clara AU:
“We’re going to start a family. You and me. Together. What do you say?”
I think the next regeneration of the Doctor needs to be a child who has had his memory wiped so he is still a genius but grows up like a normal kid under the care of his companions who have also had their memories wiped and then they find a blue box in their basement that seems rather familiar and lights up when the Doctor touches it. Then the Doctor and his siblings and parents have to learn about who they are and who the Doctor is.