This is how my Azorius deck looked after Gatecrash. It started as (and here continues as) an enchantment focused deck, which also benefits from and encourages card draw, and showcases my preference for flying creatures.

I started with Ethereal Armor and decided to search for enchantments, putting everything I could find that fits in there. The card draw strategy became apparent with Righteous Authority and the wealth of other cards that supported it.

I have strong personal flavour preferences that also influenced this deck, such as many flying creatures, and no Azorius Arrester which has butt ugly art.