I've never noticed
I've never noticed a full stag in either of these before. Then again, there are a lot of tiny details crammed into both FJ and HE. If we were not allowed to show any creatures or characters that appear in either of these 2 rides for even a second, that would leave...what, like Mundungus Fletcher, flobberworms, and Mrs. Figgs' cats for future rides? :saywhat:
If we're going to get crazy with this, then I personally vote for including an attack on the carriages by a group of feral pygmy puffs. And why not turn Madame Maxime's giant carriage into a refreshment spot on the edge of the forest? They could sell Bertie Botts Every Flavour Macarons in French flavors like kir, Nutella, violet, Baba au rhum, crême brûlée, and unicorn poop.