I wonder if it's just "sensibilities" that's the reason for skipping Araby, or other reasons, like it being rated low with focus groups?
C&C Generals did the best Araby :D
Araby is like if there was as a "Bretonnia" faction, called "Francia" with its people called "Francs" but instead of actual interesting stuff like peasantry being Anglos and knighthood French a la Plagenets in England, everyone was French and their units were a combination of stuff like Spanish tercios, Italian knights, British longbowmen, German landsknecht and Hungarian hussars and maybe French artillery, as well as French ox cavalry while viewed as Medieval France. They would also have a Jean of Arc that's basically a hysterical witch that is burning the countryside and mythic units like Nagas. All under the umbrella of French people.
If you disliked how incoherent and retarded this all is you would hate fun. This only being made in the first place of course that people thought those were all just Arabic and exotic and "fun". Of course people don't know as much about medieval middle-east except "haha funny camel men" so none of that would even be noticed as out of place.
Kislev is almost like this, almost, but at least Kislev has two different peoples and is mainly based off of Rus principalities and Cossacks with the Polish hussars being more of a side thing and part of Eastern European aesthetics. It still has some retarded stuff like axegun Stereletsy.
Nobody is against fantasy or "fun". Araby doesn't do well because it is retarded. I would love an actual medieval middle-east "Bretonnia" faction based off of Arabian nights taking influence from real life Abbasids but such a thing can't even have even the basic nuance like Bretonnia distinction between French knights and Anglo peasantry even in a "parody" faction.