Heya.
I\'m only using the morrowind system as an *example* of what could be done instead. There are lots of other quest systems, and we could even do a hybrid one that still has players talking directly to npcs, as long as it doesn\'t require guessing magic phrases.
Really the issue at heart is that the difficulty in doing quests currently is COMPLETELY in guessing the magic words the npc\'s want to hear. It takes a couple minutes to do the quest, and HOURS to figure out the magic words. Sure some people guess right the first time, but most players I think are having an extremely hard time with it. Adding more phrases that the npc\'s understand is not only time consuming for the developers, it doesn\'t solve the problem and never will. It will only make it slightly easier. It\'s still a guessing game, with lots and lots and lots of potential answers (seriously, over a hundred in many cases).
One interesting alternative that I had in mind was using a real natural language processor library like A.L.I.C.E. that had special databases for quests. Not only would this make it far easier to recognize player responses as valid (even if they aren\'t exactly like what the quest writer thought of) but npc\'s would seem to talk more fluidly, maybe even have full \"conversations\" with players. Now THAT would be interesting to see!