[quote=@Scarifar]
Well, just in case others have ideas, I plan on creating a god of Order, the opposite of what quite a few of you seem to be making. The portfolio... I suppose I'll take either Light or Purity.
[/quote]

I'd say Light is more of a Domain and Purity is more a (Portfolio) of Light.
If you're going for Order as a Domain, Portfolios would be things like (Balance), (Law), (Morals), (Permanence), (Stability), (Punishment), (Retribution) etc.