I think TNG never could decide what the Romulans should be. They moved back and forth between cold hearted killers with no remorse or honor to thoughtful, logical and passionate. I've been going through the DVD's of TNG over the past month and notice that seasons 4 - 6 really play the extremes. One episode they accept help from the Enterprise and then try to destroy them. Next encounter they are upset because a ship with 18 aliens is destroyed.