It would vastly improve and modernize the feel of the game when interacting with mission agents etc.
Could use AI to generate the animations, and the voices for sure.
Yes i know it would still be a lot of work. The wall of text could still be there. Let whiners disable it. But imagine having a 3d avatar standing there talking to you. Awesome.
It would help make the agents feel like characters, rather than generic buttons to press.
It would be more exciting / interesting / entertaining.