Agreed.
I think they would be nice flair for an encounter here or there, and be a fun LIMITED resource to try to save -try to prevent from exploding.
Currently they overshadow other tactics.
Why would I use class specific mechanics to clear the underground temple when I can just use fire on oil and clear most of the room... This leads to poor replayabiliy as the cool class choices I CHOSE lead to the same game play as the first run.
