I can't say much about ModAU characters' and their political stance because I'm more or less not interested in politics (in general). But I found the discussion about religion quite interesting, because it felt very awkward. XD If the characters aren't obviously religious in canon, I'd never think that they are in any way religious. I'm so used to only see and meet non-religious people that it's hard to see any characters belonging to a religion. I mean, you'd also have to differentiate the beliefs depending on where your AU takes place. Culture would have some impact on the development of the character, I'd say.