I wonder if there'll be an Amelia figure. She could be dressed in her coat & rubber boots and the accessory could be the little suitcase she packed in "The Eleventh Hour".
the problem with that is, it risks looking a little to much like Padington Bear.
Then agin the Doctor opening the TARDIS to find Paddington as he was when he was found in the first book
In the first story, Paddington is found at Paddington railway station in London by the Brown family, sitting on his suitcase (bearing the label "WANTED ON VOYAGE") with a note attached to his coat which reads, "Please look after this bear. Thank you."
could be quite amusing.