Will anything bad happen if I just completequest through the main quest? The reason I want to do this is that I've already played through the main quest in previous careers and I just want to sidestep it so that I can begin Servant of the Dawn by NorthStar462.

Things that I foresee that can go wrong with this:

1. Martin may still be around and will have no dialogue for his situation because he is not supposed to be there.
2. People who would have relocated will be stuck, people who now should be dead will be zombies with no dialogue.
3. I will be stuck in the FG, MG, TG, DB quests because there is someone I should have spoken, some item I should have gotten, or a title I'm missing from the MQ.
4. Other people warped to a location and standing there forever because something that should have happened was bypassed by completequest.

That won't work, no. Scripts are run and variables are set at stages within quests, not by completing them. You'll have all sorts of problems.

Thank you for confirming my suspicions. I'll just have to tgm through the mq, then.