since AoS involves using heroes only, you might wanna trigger it, use map.ai on all computer players (so they will automatically cast spells) and if there are shops you might wanna trigger that so the AI will buy items that it needs. Ex: boots of agility if its an agility hero.
If i got it right u say to me to make an ai from the warcraft's one (i think it only works with melee maps) I have tried to make a full triggered AI and i achieved it until a point (example the paladin i put casts holy light to heal or damage the undead or divine shield self)
If u want to be kind can u xplain me better ur comment. thx
EDIT:OOPS stupid post you guys may think that ive never opened the WE.(it is in the triggers-AI) sry. the hero uses abilities but he doesnt move.(i tried it)
when you activate map.ai for a computer player, it doesnt matter melee or not melee, the comp should move the hero and use his spells just like in a regular map, to make him buy items use triggers.