I want to be able to use objects for setting up or implementing traps/ambushes such as:

1. I want to be able to throw torches, you know at spilled flammables on the ground etc..
2. I want to be able to pour acid/poison gas down the goblin holes at goblin camp to damage them if they use them. Or any other creatures hole that they might use (thinking future acts that might use such).
3. I want to be able to set up traps that have a duration on the effects (flames, gas, etc.. ). We have tons of traps we as players have to deal with (Hag fight for instance), why can't we create our own if we can pre stage an area for it?

These are all tactical choices I would like to be able to implement in the game. It would allow a player some creative choices rather than direct hack and slash, or snipe from afar, without the overpowered issues "barrelmancy" caused.