First, it is just a suggestion of new maps for Europe. Secondly, with a good idea and map design, it will not be a duplicate of another map.
Brand new maps for Europe could bring us even more Flora and Fauna, Treasures, textures, etc.
What’s wrong with that? It doesn’t have to be 16 more, it can be less. Simply with the 9 current Royal Houses there is a problem of RH repeatability on many many maps - it kills the diversity of European maps and makes them boring faster because of this repetition.
The names of units from RH are weak not because they are European or did not have a name - it was just the creators’ decision, strange but it can always be changed.
Of course, I know very well that there were many more European royal houses than 26 throughout the continent and for many centuries. With 25 Royal Houses (9 current + 16 new), Europe would be “complete” for the gameplay.
Currently, Europe has around 36 maps (including the unavailable ones). By doubling the number of European maps (72 in total?) And adding 16 brand new Royal Houses (25 in total), European maps would become much more interesting and less monotonous than they are today. Royal Houses is a way to represent nations that unfortunately could not be civs in AoE 3, e.g. Basques, Catalans, Scots, many German and Slavic nations, etc.
When releasing new DLCs focusing on Europe, developers could simultaneously add more European maps and Royal Houses to the European map pool.
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