Yes ! I often whished I could wander around in a game after it has been "finished".
After completing a quest, I often talked to NPCs in <img src="/ubbthreads/images/graemlins/div.gif" alt="" /> and often got some kind of "congratulatuion" or a similar remark.
I could imagine something like that for a time *after* a game (so to say) - just meeting NPCs again, and listen to what they say ("you are now ready, aren't you ? Having saved the world again, heh ? <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" /> Well, I've got a Quest for you - could he please help me milking the cows in my stables ?")