The new version (development branch v 2.12 at this time) of setDamage command allows the possibility to influence trees, poles and walls fall direction by supplying the killer entity param. The fall direction will then be away from killer's position...
this killer param is set to objnull by default. Killer term is a little bit ambiguous because it's a command, so a scripted damage, and the scripter can choose any entity, even unrelated to a killing action (firing ammo).
Anyway, this could be nice if, instead of an entity (killer), this param could be a position: position of killer for compatible, or any 2D/3D position.
This way, no need to add an object (killer) for influencing all fall directions for multiple trees, poles... like from an origin of an explosion.
Thanks