So anyway, I've always had the idea of a "safety" option for Skyrim. What is this "safety" option, you ask? Or really, you're thinking. Well, it'd just finally give the ability to kill essential characters and drop quest items. Things that would otherwise annoy people who are willing to accept the consequences of their actions (or more often, fix a bug the brutal way). It could be in the gameplay option panels, like anything else, and there could be one or two. A safety for being able to kill essential NPCs, which you could turn on or off (but naturally would be on to begin with so nothing would change unless the player wanted). The game could give you a disheartening message just like it did in Morrowind (which I really enjoyed when it happened, though to be fair I knew when to expect it). The same safety thing could be applied to quest items, because sometimes they stick in your inventory or I'd just like to sell the damn thing instead of completing the quest for a lesser reward.
So, again, not sure how many times this has been suggested. I don't know what else to call it. I'm not complaining I can't kill NPCs and such, but I do miss it. Especially captains of the guard and such who think they're such big shots!