What kind of quests do you guys want to see? I personally liked the dark brotherhood because of the many different ways you could complete the quests. You could activate traps, go in and kill everyone, or whatever you wanted. There were tons of options!

Quests with many choices

you'll probably benifit from this thread "http://www.gamesas.com/index.php?/topic/1158575-a-hope-for-a-true-quest/" Please read the thread before posting it'll likely give you good quest ideas.