I think it is beyond stupid for have Arkham in the title. Having it in the title of the first 2 games made sense from a story point of view. In this case, it makes no sense whatsoever why Arkham would be in the title other than because WB thinks the game somehow won't sell.
I really fear that this game is mainly being made just to capitalize off Batman's popularity in the video games. My theory is that Rocksteady is working on a big Batman game that is a sequel to AC for the next-gen but needs more time on it so WB decided to release something this year they can make money out of while Rocksteady continues working on the game they're working on. This isn't necessarily a bad thing and doesn't automatically mean the game will suck but it is a red flag for obvious reasons and things like Arkham in the title, Rocksteady & Paul Dini not being involved, and the game being announced so late all points to this theory possibly being true.
As for what we've seen of it, I do think the game looks good so far. I love the visuals and the whole concept for the story. I also think the idea of the story taking place on Christmas Eve is great, especially since I probably won't be able to play this game till Christmas Eve
. I think Batman looks great but Deathstroke's mask bugs me. Something about his masks gives me the vibe that he was pulled straight out of a half-ass game made by a developer like Activision. The way that mask just sits on his face makes his face look oddly-shaped. It doesn't look like the shape of a head that a normal looking human in this universe would have.