Angel will always be Angel for me. I was a little disappointed she wasn't crying when eating her mapo tofu like she's in most of the fan art. But she's plenty cute nonetheless.
In any case none of these arcs so far have gotten us anywhere in terms of finding out the truth behind that world (although they were of course meaningful by showing us some practical aspects and limits of it). In that sense this arc wasn't really significant other than to bring down the old Yuri built walls between the various student groups. Yuri was quite solidly stuck on uselessly fighting against Angel, which in the end was nothing but maintaining a status quo. She wasn't really achieving anything at all, least of all figuring out the world (which would translate to fighting against God).