Tactics It's hard to play Dragonquest and not have some tactics. The combat aspect of the game can often feel like a mini-wargame. Keeping encounters & conflicts balanced is a real challenge.
Mirror If the characters have a good suggestion I have no qualms about incorporating it into the game. I think it gives them a sense of ownership as well. The game is our collective endeavor. I may host the game, but it really is our story. I only have an inkling as to how it may play out with time.
Improvisation I usually have a final encounter in mind, or the closing act of the session but rarely more than that. How the groups gets to the final conflict/resolution is part of the fun.
Destined I always plan on them becoming destined for greatness, but fate does intervene and random deaths do occur from time to time. My hope is always one of appropriate challenges and entertaining/engaging story lines.
Death GRIEVOUS! They happen, and someone usually dies. More than a handful of times have I planned for that final encounter only to have one of the players grievous their main opposition and bring the final chapter to an abrupt end. However, fate is fickle and watching some well developed characters fall to random encounters seem to balance out the karma of the dice.
Beer & Pretzels In the end if it isn't fun I can't imagine getting all that excited about playing. I tend to see this one as a more light-hearted approach to the happenings of the game. Losing a beloved character is painful, but it shouldn't be the end of the world.
Tinker I wish I could leave the game alone as it is, but that will never happen. I will stop modifying Dragonquest once I am dead or have lost my mind.