as far as i remember Blood on the Ice is the only quest that was a real pain to do. I didn't care enough about it.
if you are on PC you have no worries because you can console your way out of any broken quest etc.
if you are on xbox or ps3 then chances are loading an earlier save will/should fix it.
the game is so vast and complicated that the bullseye is in the eye of the beholder and a moving target.
my advice... relax and have fun!
Your advice is great, but impossible for me to take.
I cannot, and I will not ever accept broken quests. Not a single one, vast or not.
I will either avoid the quest until a safe time to trigger / complete it, whilst reloading previous saves until it is not bugged,
Or never trigger / attempt the quest at all until a future patch fixes it.
If it is never fixed, and if my methods never cause it to be unbroken, I will restart the game until I can get a game with no broken quests.
If that fails too,
Then I will simply REFUSE to play the game any further, and quit.
Not many may agree with this, I know.
But this is my standard. I will not play a broken game.
That would be the same as buying a brand new chair with a missing leg, and choosing to sit in it anyway, accepting the fact, "at least not ALL the legs are missing."
Not me. Not ever. Forget it.