Choose what you say 1.5 (LotusEliseGeek)

Another thing to think about is this. You see a civilian and you walk up to him and press "t" for talk. He tells you that neat gems are found in a cave up north, and the conversation ends. No, hello and goodbye.

The only problem I can see with this is that it will need a new system to work with. For example, you you talk politely, goods may decrease in price, and they will increase if you are mean. Also, not every would want to type greetings to NPC's all day. Some preset greetings or some quicklist greetings would help for people wanting to play fast.