In ARMA3, every houses/observation towers, inside has osnap-positions for the AI-units with special numbers(#1 and etc) But these positions are not so much and they are not located at not every place, which wants the player. Thus AI-units is not always able to take any position, inside any building, if it wants the player.
It would be great to see in Eden-Editor the ability to create SPECIAL OSNAP-POINTS, where the player wishes. When a player does a mission, he will be able to create such positions. Subsequently, this points, could be linked to the movement-waypoints or simple this point, can de ordered to take this position. Thus could greatly improve the AI-locations inside any buildings, with opportunity of specific defense of any objects.