(a resource for nwn2 builders)

Don't forget that containers (chests, dressers, long dead corpses to loot, etc.) should have the following flag set under the behavior section of the properties window:

Has Inventory?: TRUE
Static: FALSE
Useable?: TRUE

If you want dynamic treasure, make sure you define a treasure script for the On Death and On Open events. One option, gp_treasure_op_de, is documented here: http://www.wendersnaven.com/node/65

Leaving the faction to hostile will allow players to bash the object without any real repercussions. In NWN1, setting the faction to a neutral faction would cause any nearby members of that faction to attack the PC if certain events were triggered. If I recall, these were On Death and On Disturbed. I'm unsure what events trigger reactions in NWN2, but they are probably the same.