I definitely like to see the Alans & other Sarmatians fixed in game and made playable, they are on the front line vs the Huns.
At the same time I would like to see a major faction in the game like the Askumites. http://en.wikipedia.org/wiki/Kingdom_of_Aksum & https://www.youtube.com/watch?v=ad-k2nwJGZw (doc)