As I mentioned elsewhere, it's kinda strange they didn't learn the lesson from Euro coins and did multiple versions of each banknote to cover and represent every member state with at least one person.
With the amount of security mechanisms in a banknote that have to be tailed to each design, I would assume that making that many variants would be financially irresponsible.
As someone with the detection mechanism tatooed on their arm, I can tell you this is not based on the visual design of the entire note, but on a small constellation of five rings, the so called EURion constellation [0]. It's also used by other bank notes around the world, inlcuding the Yen and US Dollar.