Wonderfull quide Atraphoenix!

I never understood why people think horse archers are weak in seiges - if used right they will still decimate everyone on the field like your quide proves.

Here have a baloon: you deserve it.

About attacking Stone walled towns with Nomads - I have limited experience on that, but starving them out until they sally, shoot them to pieces and use an ifantry unit with a siege tower to take the walls and finish of thoose who get back into the town. Have you tried anything similar in the past with succes or do you have any better ideas?
(However this is rather for the Sauromatae since the Saka Rauka and the Pahlava can get good quality infantry later on, while the Sauros have to do with levy troopers)