A plot.
Or NPC depth. Not sure which of the two I'd pick tbh. Probably NPC depth.
Well, it's TES, so you can make your own story, but yeah, either more NPC depth, or give them the 'knowing when to shut the hell up with that same line that they've said twenty times already and doesn't even make sense anymore due to the player-character's actions that everyone really should know about' perk.