There would need to be enough of such things for an actual strategic difference, or else 5 minutes in everything would be destroyed and it'd have been nothing more than eye candy.
Sometimes I wish there were loose objects you could throw like in HL2 or Oblivion. I just can't see the advantage to it, unless you could, like, collect empty beer bottles above a door on a shelf that can be reset, and have a hummie shoot a string when a mara comes through the door so he gets rained on with glass :roll:
I guess traps would be cool and could add an additional level of strategy to the game (essentially a buildable outside of one's base, I guess), but that hardly seems supportable.
I still dig the pressure plates that release spiked flails from the ceiling in Oblivion
