I want Skyrim to have a shorter cry-distance or eliminate it altogether for stealthy kills as well as implement a 'buffer-period' feature whereby if nobody who knows of a crime is left alive before they report it to the authorities there is no bounty. This will make killing an NPC in the middle of a town challenging whereby a single witness would spread the news extremely quickly but make killing a lone NPC in the wild more realistic (no witness, no crime).
And I know you could have installed a mod to help fix this in Oblivion but frankly if the developers don't think this is worth changing for Skyrim I don't know what is. It leaches away immersion and realism from a fantastic game.