for example look at oblivions Wanted Posters of the gray fox.
bethesda could add wanted posters around the cities that lead to quests to kill off low ranking members of the theives guild and assassins guild (whether its the db or the morague tongue) for the "good" characters that later lead to killing the higher ranking members. because these npcs are already in the game this wouldnt involve to much work on bethesdas part but would also allow for players to feel that if they are a good character they can actually help the people of skyrim out. The first side quest will eliminate the characters ability to join the opposing factions.As they continue to kill off the evil guilds the evil npcs that are left alive will either go into further hiding or openly attack the player.
This is a relatively simple fix to oblivions lack of tension between good and evil. The good players would realize that being good doesnt mean you can just walk through the cities and talk to db members and theives guild members like your evil while also allowing the less "hardcoe" players to simply skip these side quests and never choose a side allowing them to do both the good and evil guilds as if this feature wasnt even in the game.
The evil version would simply be the opposite of the good version where the theives guild doyans would give you side quests that involve stealing huge treasures directly from the fighters and mages guilds. and the assassins guild would offer side quests that have you kill low and high ranking members of the good guilds. Eventually the player could kill off the entire evil or good guilds (depending on their side) but not without facing the wrath of the guilds they are trying to destroy creating a sense of immersion that was not offered in oblivion.
Bethesda could even add the option of side quests to create a rivalry between the mages and fighters guilds where say a mage could try to elevate the mages guild above the fighters guild and therefore get rid of his ability to join the fighters guild while also starting a war between the two guilds. And same with the theives guild and assassins guild (although this would be a bit harder to implement unless the skyrim theives guild is ok with murder),
This is something that bethesda could actually do because they are not only trying to market their game to people who enjoy fully immersing themselves in the lore and factions of the elder scrolls. the bottom line is they have to try and sell as many copies of the game as they can. This feature allows them to both appeal to the mass market and give their hardcoe fans a bit of the experience they've been asking for.
Adding this feature as well as adding a toggle feature where you can turn off/on the ability to make your character eat drink and sleep to survive etc,,, would give the hardcoe fans great immersion and give the less rp fans the ability to play the way they want
thoughts?