Admin got back to me this evening.
Probably should be listed in alphabetical order for the aforementioned issues people will have in the future finding their cards in the list if there's no numbers to go by. For people who have cards from this set in their collection, it would be interesting to know how they arrange them. I imagine it would have to be alphabetically also, otherwise it would be quite tedious to get them in the same order as the base set and to readily find specific ones later on.
So there you have it. Dan was right again, and as I said in my reply to him and to Admin, that's fair enough and makes logical sense. The guidelines stands as is: All NNO sets should be ordered alphabetically by last name. Thanks all for your patience while my pestering self went for an answer.
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.