I'd be more supportive of first trying going back to 2 castles personally than dropping straight to 1 off the bat. I may or may not be right in that aspect, but it's just an opinion.
I think a non-mvp card WOE would be fun.
Don't know enough about SE to make an opinion on it.
I can guarantee that they've been working on some of the last part, like Panda said. But, I don't want to give away things I shouldn't. We'll just say that you should be happy with it :o