This adds to a living world that you have an impact on through your quests, and not just through slaughtering mobs whole-sale.
Original Sin is neither Skyrim nor an MMO and it's also not a real time action game. A "living world" is only needed if you travel through the same regions over and over and over. Original Sin is more a classic "linear" experience with hand-crafted encounters for turn-basedc combat. Respawning mobs would just be a huge annoyance. Nothing is worse being forced to fight against a level 10 mob while you yourself are on level 20 for no apparent reason. That would seriously devalue the core idea of this game and on top of that it's absolutely unnecesary.
If you guys want to have more combat replay the game or wait for mods/expansions with new content.
I wasn't suggesting it for combat replay, but rather for a sense of impact. Also, I've never actually played a game that implimented this idea.
Also, I wish people would stop comparing D:OS to Skyrim, they are nothing alike. Also, neither Skyrim, nor any MMO have what I would call a "living world". By this I mean one that changes with you. You know, so you can see the impact you make on the world.
Still I can see how this would be wasted effort. As you said, LordCrash, the game is set up in such a way as to ensure this sort of situation doesn't occur in the first place. While it might be a nice idea, there wouldn't be much point.