I can't help but noticed that the confusion starts from that terminology, customers asking they "pre-ordered CE/standard" but didn't got their CD-Key and so they're pissed and angry with either ANet or their retailer (but usually to ANet).
Since the term "pre-order" means ordering something early on while the product is not yet in the stores. Versus the "PreOrder" box

Just a thought to help ease the confusion in the future and upcoming stand-alone expansions. Maybe it's too late for C2: Factions.