I am planning to run a new campaign using the Zeitgeist Adventure Path. The campaign involves competing ideologies and philosophies, and the players will need to position themselves with regard to those. That can be conflicts between capitalism and communism, between naturalistic old faith and a hierarchical new church, or between modern technology and traditionalists.
In this context I don't really like to attribute simple terms like "good" and "evil" to the competing philosophies. So I was wondering whether I can simply not use any classical D&D alignment at all for my players and NPCs. But I am concerned whether I am overlooking some 4th edition D&D rules which require the alignment system to work. As far as I know there is no "detect evil" spell any more. But are there other rules or powers which will cause problems if nobody has an alignment any more?