Yes I do Sir Good Sir!
I guess it is an easy thing to implement which has no bad side.
I'm just wondering , maybe they had no throwing weapon because they are rhodok? Do rhodok have throwing weapon. I don't remember...
Isn't it only Nords, Sarranid, Khergit and Vaegir that have throwing? That would mean that all the Rhodok and Swadian parts wouldn't have any throwing for their AI defence. That would be very mean towards the throwers out there. Siege is one place where throwing is usefull.
Also, add stones to EVERY NPC castle buy list. Stones are awesome in sieges and can be used by anyone.