I have! Umm, I’m not sure if her hair is short or if its the distance from the camera. You’ll notice that the other girls depicted in the picture have braided hair that is pulled close to their head thereby appearing short from a distance but is in actuality long.
That makes sense about Mace/Meryn. It’s not like show fans even know who Raff is. Also, I heard that the Mercy scene- as well as unpublished Arya material!!!*- is going to be featured in season 5.
So I definitely think the Mercy scene is going to be included.
I’d tell everyone to expect gratuitous and noncanon violence, sex, and killing for Arya season 5. But actually. She’s 17 filming now and they had Sophie kiss LF’s actor (who’s in his forties or something) when she was 17 and Arya was propositioned in season 4, so I’m not sure they’ll care to much about the Mercy/Raff stuff- they didn’t actually get sexual.
* Everything we hear about the show is not certain until it actually airs. Personally, I don’t want the show to spoil the books for me. Part of me is naively optimistically hoping that this means that GRRM foresees TWoW being published before season 5 and has given D&D the go ahead and some of the scenes to use. But that’s, as I’ve said, naively optimistic of me.