So there is a lot of quests that you like kind of threads, this is the opposite, what quests did you find boring and maybe tedious? for me it has to be Lost to the ages. first it was bugged so reading the book didnt start it for me, so i had to fix that. then i met an uninteresting ghost, who hyped up the forge like its something marvelous. i spent 4 hours looking around Skyrim for the damnable ruins, and after all the trouble of finding the four pieces and the forge, i found the rewards to be pretty average. i hated the way all three items looked. and their enchantments were bleh. at least for me. its hard to find a quest that is boring in TES but it happens sometimes, so whats yours?
Also faction questlines dont count, were only talking about separate quests.