I haven't played the Molten dungeon. I usually run scepter/torch and sword/sword, meaning I have a block on both weapon sets. Having these two blocks mean I normally can avoid those big time hitters (as long as I use them right, that is). I do not know if this helps you, but it might be worth looking into.
Kewl. I really like the way the living story makes different areas of the game come alive, like Wayfarer Foothills and Diessa Lowland right now. I look forward to follow the living story and the game in general in the years to come.