Why couldn't the game just create a new legate if I a certain quest needed him? If I changed side to the empire for example.
I don't usually kill important people for no reason, this is the only time it has bothered me, but why couldn't they just have the crucial main quest people essential for the period of the main quest like fnv.
It's so stupid having most of the people involved in a side quest essential, if I kill someone I shouldn't be able to do their quest, end of. The same with quest items, to many of the items are 'quest items'. I honestly think if you lose the item you shouldn't be able to do the quest (or open up a new avenue for completing it), I can manage crap like that myself.

What should happen if I try and kill an essential NPC is they should appear dead on the ground, completely incapacitated. Then, when I leave the area, they should spawn either in their own house or in some kind of house of healing... where they stay for several in-game days / weeks (during which time they're unavailable as a quest giver). Once they've recovered, they should return to their normal routine, and when I speak to them, they should: