Sometimes, I'm not sure if its Stannis I like, or just the actor, or both.
And Ramsay's a rare character. Usually you hate people like him, like Joffrey. I hated Joffrey. But Ramsay's the type you hate... but you kind of still like.
Also, Stannis is always talked up to like he's some grand general, made out to be "oh so great" and he's literally been humiliated the entire show. Brother won't join him, loses at the Blackwater, and his entire northern campaign was a sham from the start. There's nothing particularly awesome about any of that. I know Book Stannis was much different and participated and won many battles in the past, but you don't really see that in the show, which is disappointing.
As for the Arya-Trant scene, I was satisfied. If only she could have done stuff like that to Joffrey.