> Khans of the Steppe
> Looks inside
> Literally just Khans of the Mongols
But seriously though, how could you not include content specific to Turkic and other Nomads too, especially after RtP?! Before the Mongol invasions (relatively late, in terms of this game), Turkic nomads were the steppe invaders of Europe and Eastern Rome, and even if we'd exclude the Seljuks we'd still have: Huns, Bulgars, Avars, Khazars, Pechenegs, and Cumans.
This isn't even mentioning the Magyars, who although not Turkic, still deserve attention due to the huge impact they had on Central European history. At least please just change how the migration to the Pannonian Basin works to be more in line with new content, instead of making us wait a few more years.
Lastly, I feel that giving the Turkic tribes more content would automatically liven up Eastern Europe, making playing in the region more dynamic, even if you don't play them. It might lessen the sting of just having an entire year dedicated to the Far East, for many.